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Tanidromites maerteni sp. nov. urn:lsid:zoobank.org:act: 6AF2E747-B3FE-4417-A4D9-3B94B2A5693A Tanidromites maerteni Fraaije, Van Bakel, Guinot & Jagt, 2013: 250, fig. 1 [unavailable]. Type material. The holotype, MNHN.F.A47612 (leg. L. Maerten), is deposited in the collections of the Muséum National d’Histoire Naturelle, Département Histoire de la Terre (Paris). The type specimen originates from the town quarry of the Commune de Maizet, Calvados (northwest France) from a level which is locally referred to as the “Oolithes ferrugineuses de Bayeux”, the age of which is early late Bajocian (Niortense ammonite Zone) (Gauthier et al. 1996). Etymology. In honour of Lionel Maerten (Ver-sur-Mer, France), who collected the holotype and kindly donated it to the Muséum National d’Histoire Naturelle collections. Diagnosis. A tanidromitid with lateral epibranchial spine; slightly concave portion of cervical groove at central posterior margin of mesogastric region; two faint, yet clearly visible, V-shaped grooves on central part of mesogastric region; relatively deep and long postcervical grooves; pustulate ornament on cardiac, epibranchial and epigastric regions (in accordance with Fraaije et al. 2013: 252). Remarks. A full description and figures of Tanidromites maerteni sp. nov. are supplied by Fraaije et al. (2013).

Paguristes timoni n. sp. (Fig. 2) Zoobank: urn:lsid:zoobank.org:act: C4F34FA0-7A19-46B4-91BC-C93C621CD977 Diagnosis. Keeled merus with row of small teeth on distal margin; moveable finger corneous; fixed finger covered with rows of alveolate tubercles, decreasing in size on distal end. Upper margin with tubercles; cutting edge with several teeth proximally. Walking legs with keeled edge and row of tubercles. Type material. The holotype, and sole specimen known to date, is CMM-I-4600. Etymology. Named after the legendary misanthrope and hermit, Timon of Athens, who was popularized in the play ‘Timon of Athens’ by William Shakespeare (1564–1616). Locality and stratigraphy. Driftwood Beach, Calvert County, Maryland, from the upper Miocene (Tortonian) Little Cove Point Member of the St. Marys Formation in a silty lens within Bed E (Ward & Andrews 2008). Kidwell et al. (2015) identified this level as belonging to “SM-C,” assigned to Shattuck zones 22–23 and part of dinocyst zone 8. Description. CMM-I-4600, preserved inside gastropod shell (Busycon sp.), length 25 mm, greatest width 17 mm. Manus missing from major (left) cheliped, carpus and merus preserved. Keeled merus with row of small teeth on distal margin. Minor (right) cheliped comprising complete propodus, lodged in gastropod aperture, measuring 7 mm length, 2 mm maximum width. Moveable finger corneous, fixed finger covered with rows of alveolate tubercles decreasing in size on distal end; most tubercles with alveoli, indicative of setal insertions; upper margin covered with tubercles; cutting edge with several teeth proximally; distal side not visible. Carapace fragment preserved but covered; small portion visible lacking any specific details; Single fragment of walking leg preserved showing keeled edge with row of tubercles. Several other fragments preserved, but unidentifiable due to weathering of specimen. Remarks. In this novel form, the left cheliped is larger than the right one, which is diagnostic feature of diogenid and annuntidiogenid hermit crabs (McLaughlin 2003; Fraaije 2014). The Maryland specimen is remarkably similar to the extant Paguristes candelae De Matos-Pita & Ramil, 2015, from Mauritania (see below). Discussion. Cheliped shape and ornament in P. timoni n. sp. compare closely with those of P. candelae, in that both have rows of tubercles and setae and tubercles decrease in size toward the distal end. The dorsomesial margin in P. candelae has three large tubercles; these are absent from P. timoni n. sp. The dorsal cheliped surface in the latter appears to be less convex in comparison with that of P. candelae, while the teeth along the cutting edge appear to be larger in the extinct form. The walking legs in both taxa show a keeled ridge with a row of spines, although the one in P. timoni n. sp. seems more acute.

Genus Pagurus Fabricius, 1775 Type species. Cancer bernhardus Linnaeus, 1758, by monotypy. Species included. For data on extinct forms, reference is made to lists provided by Schweitzer et al. (2010) and to subsequent records by Beschin et al. (2012), De Angeli & Caporiondo (2017) and Polkowsky & Fraaije (2019). Extant species have recently been discussed by Lemaitre & McLaughlin (2021a)., Published as part of Wallaard, Jonathan J. W., Fraaije, René H. B., Van Bakel, Barry W. M., Nance, John R., Lindholm, Adam & Jagt, John W. M., 2023, New hermit crab species (Anomura, Paguroidea) from the upper Miocene St Marys Formation of Maryland (USA), preserved in their host shells, pp. 389-397 in Zootaxa 5227 (3) on page 390, DOI: 10.11646/zootaxa.5227.3.7, http://zenodo.org/record/7518846, {"references":["Fabricius, J. C. (1775) Systema entomologiae: sistens insectorum classes, ordines, genera, species, adiectis synonymis, locis, descriptionibus, observationibus. Officina Libraria Kortii, Flensbergi et Lipsiae, xxx + 832 pp.","Linnaeus, C. (1758) Systema naturae per regna tria naturae, secundumclasses, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Vol. 1. Editio 10. Reformata. Laurentius Salvius, Holmiae, 824 pp.","Schweitzer, C. E., Feldmann, R. M., Garassino, A., Karasawa, H. & Schweigert, G. (2010) Systematic list of fossil decapod crustacean species. Crustaceana Monographs, 10, 1 - 222.","Beschin, C., De Angeli, A., Checchi, A. & Zarantonello, G. (2012) Crostacei del giacimento eocenico di Grola presso Spagnago di Cornedo Vicentino (Vicenza, Italia settentrionale) (Decapoda, Stomatopoda, Isopoda). Museo di Archeologia e Scienze Naturali \" G. Zannato \", Montecchio Maggiore, Vicenza, 101 pp.","De Angeli, A. & Caporiondo, F. (2017) I granchi eremiti (Crustacea, Decapoda, Anomura, Paguroidea) dell'Eocene medio di cava \" Main \" di Arzignano (Vicenza, Italia settentrionale). Studi Trentini di Scienze Naturali, 96, 11 - 32. [http: // www. muse. it / it / Editoria-Muse / Studi-Trentini-Storia-Naturale / Documents / STSN _ 95 - 2016. aspx]","Polkowsky, S. & Fraaije, R. H. B. (2019) A new Oligocene hermit crab (Decapoda, Anomura, Paguroidea) from the erratic ' Sternberger Gestein', northern Germany. Neues Jahrbuch fur Geologie und Palaontologie Abhandlungen, 291 (1), 61 - 63. https: // doi. org / 10.1127 / njgpa / 2019 / 0789","Lemaitre, R. & McLaughlin, P. (2021 a) World Paguroidea & Lomisoidea database. Pagurus J. C. Fabricius, 1775. World Register of Marine Species. Available from: http: // www. marinespecies. org / aphia. php? p = taxdetails & id = 106854 (accessed 15 March 2021)"]}

Pagurus hazenorum n. sp. (Fig. 1) Zoobank: urn:lsid:zoobank.org:act: 9E06A12D-8371-4F45-B75F-60E3032C4847 Diagnosis. Major carpus (right) covered with small, randomly scattered tubercles, increasing in size toward outer margin, there becoming setose. On minor carpus (left), tubercles arranged in rows and slightly increasing in size toward distal end. Both claws densely covered with large granules, decreasing in size toward outer margin. Outer margins of propodus and dactylus covered with blunt teeth, smaller on dactylus. Outer lateral surface of dactylus with longitudinal, medially elevated surface. Walking legs covered with row of teeth, decreasing in size toward distal end. Dactylus of walking leg only covered by blunt teeth and surface with some longitudinal grooves. Type material. The holotype, and sole specimen known to date, is CMM-I-4785. It is preserved inside its gastropod host shell (Buccinofusus parilis Conrad, 1832), which is severely damaged and allows the hermit crab inside to be observed in more detail. The right and left chelipeds are preserved within the gastropod aperture. A relatively complete walking leg, consisting of carpus, propodus and dactylus, is seen posterior of that aperture. A second walking leg, of which only the carpus is preserved, is found anterior of the aperture, while several fragments of other legs are present just behind the chelipeds. The carapace should have been situated here, but this part of the individual has suffered considerable damage and there is no trace of a carapace. Etymology. In honor of Dr Robert M. Hazen, senior staff scientist at the Carnegie Institution for Science, and his wife, Margaret Hazen, writer and historian. Locality and stratigraphy. Driftwood Beach, Calvert County, Maryland, from the upper Miocene (Tortonian) Little Cove Point Member of the St. Marys Formation in a silty lens within Bed E (Ward & Andrews 2008). Kidwell et al. (2015) identified this level as belonging to “SM-C,” assigned to Shattuck zones 22–23 and part of dinocyst zone 8. Description. Chelipeds stout, broad, with propodus of major (right) claw measuring 21 mm by 14 mm; that of minor (left) claw measuring 16 mm by 12 mm. Entire surface of carpus of major claw covered with small, randomly scattered tubercles, increasing in size and setation toward outer margin. Carpus of minor claw with tubercles arranged in rows and slightly increasing in size toward distal end. Both left and right propodi densely covered with large granules, decreasing in size toward outer margin. Outer margin of propodus arcuate; that of dactylus almost straight. Outer margin of both propodus and dactylus covered with blunt teeth, smaller on latter. Outer lateral surface of dactylus covered with longitudinal, medially elevated ridge. Walking legs covered with row of teeth, decreasing in size toward distal end. Dactylus of walking leg with blunt teeth; surface with some longitudinal grooves. Remarks. The new species compares fairly well with the extant Pagurus impressus (Benedict, 1892), from the west coast of Florida (Provenzano 1959), as well as with Diacanthurus rubricatus Henderson, 1888, from the coast of New Zealand and P. bernhardus (Linnaeus, 1758) from the eastern North Atlantic. Discussion. The assignment of the Maryland material to the genus Pagurus is based on several morphological features which P. hazenorum n. sp. has in common with extant congeners, as described below. Although P. hazenorum n. sp. is preserved in situ within its gastropod shell, the carapace appears to be missing, most likely as a result of the damage to the host shell. Overall, the shape of the dactylus is more elongated and bears a closer cover of granules in P. impressus, whereas that of P. hazenorum n. sp. is stout, with blunt teeth along the outer edge and a cover of large granules. Chelipeds of the present-day D. rubricatus bear small spines, in equal density as in P. hazenorum n. sp. Pagurus bernhardus is comparable as well; this has a coarse ornament which, however, is less dense than that of P. hazenorum n. sp. (see Hyžný & Dulai 2021: fig. 35.8). Our comparison of P. hazenorum n. sp. with both extant and extinct species has yielded numerous forms with closely comparable anatomical features. Molecular and genetic research carried out recently on extant representatives of the genus Pagurus has shown that this is in fact a wastebasket taxon, comprising forms with closely comparable morphologies, but widely divergent genetic structures (e.g., Olguin & Mantelatto 2013; Sultana et al. 2018). Naturally, genetic research cannot be carried out on extinct forms, which makes any workable subdivisions of the genus Pagurus even more difficult. This morphological similarity amongst genetically diverse species is most likely a reflection of functional morphology. Particularly in paguroids, the shell has a marked impact on cheliped shape, and most hermit crabs inhabit comparable mollusks, which explains the closely comparable morphology of the chelipeds. In the fossil record, isolated paguroid chelipeds (mostly propodi) are quite common, whereas carapaces are extremely rare. In view of this, it is highly unlikely that the difficulties surrounding the ‘lump’ taxon Pagurus can be resolved on the basis of extinct forms., Published as part of Wallaard, Jonathan J. W., Fraaije, René H. B., Van Bakel, Barry W. M., Nance, John R., Lindholm, Adam & Jagt, John W. M., 2023, New hermit crab species (Anomura, Paguroidea) from the upper Miocene St Marys Formation of Maryland (USA), preserved in their host shells, pp. 389-397 in Zootaxa 5227 (3) on pages 391-392, DOI: 10.11646/zootaxa.5227.3.7, http://zenodo.org/record/7518846, {"references":["Conrad, T. A. (1832) Fossil shells of the Tertiary formations of North America, illustrated by figures drawn on stone by T. A. Conrad, 1 (2), 21 - 28. [reprinted by Harris, G. D., 1893 and by the Paleontological Research Institution, Ithaca, New York, 1963]","Ward, L. W. & Andrews, G. W. (2008) Stratigraphy of the Calvert, Choptank, and St. Mary's formations (Miocene) in the Chesapeake Bay area, Maryland and Virginia. Virginia Museum of Natural History Memoir, 9, 1 - 60.","Kidwell, S. M., Powars, D. S., Edwards, L. E. & Vogt, P. R. (2015) Miocene stratigraphy and paleoenvironments of the Calvert Cliffs, Maryland. Bulletin of the Geological Society of America, 40, 231 - 279.","Provenzano Jr., A. J. (1959) The shallow-water hermit crabs of Florida. Bulletin of Marine Science, 9 (4), 349 - 420.","Henderson, J. R. (1888) Report on the Anomura collected by H. M. S. \" Challenger \" during the years 1873 - 76. Scientific results of the exploratory voyage of HMS Challenger, Zoology, 27, i - xi + 1 - 221 pp., 21 pls.","Linnaeus, C. (1758) Systema naturae per regna tria naturae, secundumclasses, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Vol. 1. Editio 10. Reformata. Laurentius Salvius, Holmiae, 824 pp.","Hyzny, M. & Dulai, A. (2021) Badenian decapods of Hungary, GeoLitera Publishing House, Institute of Geosciences, University of Szeged, Szeged, 300 pp.","Olguin, N. & Mantelatto, F. L. (2013) Molecular analysis validates of some informal morphological groups of Pagurus (Fabricius, 1775) (Anomura: Paguridae) from South America. Zootaxa, 3666 (4), 436 - 448.","Sultana, Z., Asakura, A., Kinjo, S., Nozawa, M., Nakano, T. & Ikeo, K. (2018) Molecular phylogeny of ten intertidal hermit crabs of the genus Pagurus inferred from multiple mitochondrial genes, with special emphasis on the evolutionary relationship of Pagurus lanuginosus and Pagurus maculosus. Genetica, 146 (4), 369 - 381."]}

Genus Paguristes Dana, 1851 Type species. Pagurus weddellii H. Milne Edwards, 1848. Included species. For a listing of fossil taxa, reference is made to Schweitzer et al. (2010), Gagnaison (2012), Beschin et al. (2016, 2018), De Angeli & Caporiondo (2017), Karasawa & Fudouji (2018), Jakobsen et al. (2020), Marangon & De Angeli (2020) and Wallaard et al. (2020). For extant forms, reference is made to Lemaitre & McLaughlin (2021b)., Published as part of Wallaard, Jonathan J. W., Fraaije, René H. B., Van Bakel, Barry W. M., Nance, John R., Lindholm, Adam & Jagt, John W. M., 2023, New hermit crab species (Anomura, Paguroidea) from the upper Miocene St Marys Formation of Maryland (USA), preserved in their host shells, pp. 389-397 in Zootaxa 5227 (3) on page 392, DOI: 10.11646/zootaxa.5227.3.7, http://zenodo.org/record/7518846, {"references":["Dana, J. D. (1851) Conspectus crustaceorum quae in orbis terrarum circumnavigatione, Carolo Wilkes e classe reipublicae foederata educe, lexit et descripsit. Paguridea. Proceedings of the Academy of Natural Sciences of Philadelphia, 5, 267 - 272.","Milne Edwards, H. (1848) Note sur quelques nouvelles especes du genre Pagure. Annales des Sciences naturelles, Serie 3, Zoologie, 10, 59 - 64.","Schweitzer, C. E., Feldmann, R. M., Garassino, A., Karasawa, H. & Schweigert, G. (2010) Systematic list of fossil decapod crustacean species. Crustaceana Monographs, 10, 1 - 222.","Gagnaison, C. (2012) Des bernard-l'hermites dans les faluns miocenes de Channay-sur-Lathan (Indre-et-Loire, France). Cossmanniana, 14, 67 - 72.","Beschin, C., Busulini, A., Tessier, G. & Zorzin, R. (2016) I crostacei associati a coralli nell'Eocene inferiore dell'area di Bolca (Verona e Vicenza, Italia nordorientale). In: Memorie del Museo Civico di Storia naturale di Verona. Vol. 2. Sezione Scienze della Terra, 9, pp. 13 - 189.","Beschin, C., Busulini, A., Fornaciari, E., Papazzoni, C. A. & Tessier, G. (2018) La fauna di Crostacei associati a coralli dell'Eocene superiore di Campolongo di Val Liona (Monti Berici, Vicenza, Italia nordorientale). Bollettino del Museo di Storia naturale di Venezia, 69, 129 - 215.","De Angeli, A. & Caporiondo, F. (2017) I granchi eremiti (Crustacea, Decapoda, Anomura, Paguroidea) dell'Eocene medio di cava \" Main \" di Arzignano (Vicenza, Italia settentrionale). Studi Trentini di Scienze Naturali, 96, 11 - 32. [http: // www. muse. it / it / Editoria-Muse / Studi-Trentini-Storia-Naturale / Documents / STSN _ 95 - 2016. aspx]","Karasawa, H. & Fudouji, Y. (2018) Two new species of hermit crabs (Decapoda: Anomura) from the Paleogene Kishima Group, Saga Prefecture, Japan. Bulletin of the Mizunami Fossil Museum, 44, 23 - 28.","Jakobsen, S. L., Fraaije, R. H. B., Jagt, J. W. M. & Van Bakel, B. W. M. (2020) New early Paleocene (Danian) paguroids from deep-water coral / bryozoan mounds at Faxe, eastern Denmark. Geologija, 63, 47 - 56. https: // doi. org / 10.5474 / geologija. 2020.005","Marangon, S. & De Angeli, A. (2020) New hermit crabs (Crustacea, Anomura, Paguroidea) from the Lower Oligocene of the Ligure Piemontese Basin, northwest Italy. In: Jagt, J. W. M., Fraaije, R. H. B., Van Bakel, B. W. M., Donovan, S. K., Mellish, C. & Schweigert, G. (Eds.), A lifetime amongst fossil crustaceans: a tribute to Joseph S. H. Collins (1927 - 2019). Neues Jahrbuch fur Geologie und Palaontologie Abhandlungen, 286 (1 - 2), pp. 157 - 165. https: // doi. org / 10.1127 / njgpa / 2020 / 0895","Wallaard, J. J. W., Fraaije, R. H. B., Jagt, J. W. M., Klompmaker, A. A. & Van Bakel, B. W. M. (2020) The first record of a paguroid shield (Anomura, Annuntidiogenidae) from the Miocene of Cyprus. Geologija, 63 (1), 37 - 43. https: // doi. org / 10.5474 / geologija. 2020.004","Lemaitre, R. & McLaughlin, P. (2021 b) World Paguroidea & Lomisoidea database. Paguristes Dana, 1851. World Register of Marine Species. Available from: http: // www. marinespecies. org / aphia. php? p = taxdetails & id = 106844 (accessed 18 November 2021)"]}

Family PAGUROPSIDAE n. fam. urn:lsid:zoobank.org:act: 88399E62-3864-4B66-8D89-FC32C562F5A9 TYPE GENUS. — Paguropsis Henderson, 1888. OTHER GENERA INCLUDED. — Eopaguropsis Fraaije, Krzemiński, Van Bakel. Krzemińska & Jagt, 2012 and Paguropsina Lemaitre, Rahayu & Komai, 2018 (Fig. 11). ETYMOLOGY. — The name is derived from the type genus. DIAGNOSIS. — Prominent subtriangular rostrum, considerably exceeding lateral projections.Cervical and branchial grooves subparallel, encompassing small branchial regions (= lateral lobes) or forming broad, sinuous groove. Shield well calcified, subtriangular or subrectangular; dorsal surface slightly vaulted with incomplete midline crest; welldelineated massetic region covered with numerous setal pits; posterior carapace less calcified, delineated cardiac region; uropods and telson symmetrical. Chelipeds subequal, similar in armature and setation.

Fraaije, René H. B., Van Bakel, Barry W. M., Jagt, John W. M., Charbonnier, Sylvain, Schweigert, Guenter, Garcia, Géraldine, Valentin, Xavier (2022): The evolution of hermit crabs (Crustacea, Decapoda, Anomura, Paguroidea) on the basis of carapace morphology: a state-of-the-art-report. Geodiversitas 44 (1): 1-16, DOI: 10.5252/geodiversitas2022v44a1

Bucculentum plettenbergense, n. sp. Fig. 1G, 7 Diagnosis. Metabranchial region large, more than half as long as carapace, and a little wider than hepatic region; augenrest round, slightly concave, shifted more dorsally than in other species of genus, and flanked laterally by long, crescent ridge; suborbital spine undivided, curved upwards; epibranchial region very narrow. Etymology. The new species is named after its type locality. Material examined. Holotype MAB 3576, Germany: Plettenberg quarry n. Balingen (N 48 o 21’, E 8 o 80’), coll. RHB Fraaije, Late Oxfordian: Planula Zone (Schweigert & Callomon 1997; Jantschke & Schweigert 2020). Description. The carapace is 8.43 mm long. The rostrum and centro-anterior portion have been split off. Left augenrest complete, large, round, shifted to dorsal side at an angle c. 50 o to the surface of carapace and delimited laterally by a narrow, crescent-like ridge. The suborbital spine is directed upwards (Fig. 7A, B, arrows). The epibranchial region is very narrow (less than 10% of the total lateral length of carapace), with two symmetric swellings over the cardiac region. The cardiac region has three tubercles arranged axially, the distalmost one being the largest, and also the highest point of the carapace. The metabranchial region is characteristically large, a little bit wider than the hepatic region, and more than half as long as the carapace. Remarks. Bucculentum plettenbergense, n. sp., is distinguished because of having the largest metabranchial region amongst all bucculentids, combined with the narrowest epibranchial region. Such proportions are not met in any other congener., Published as part of Krzemińska, Ewa, Starzyk, Natalia, Fraaije, René H. B., Schweigert, Günter & Lukeneder, Alexander, 2021, Jurassic brachyurans of the genus Bucculentum, pp. 395-410 in Zootaxa 5032 (3) on pages 402-403, DOI: 10.11646/zootaxa.5032.3.5, http://zenodo.org/record/5497036, {"references":["Schweigert, G. & Callomon, J. H. (1997) Der bauhini - Faunenhorizont und seine Bedeutung fur die Korrelation zwischen tethyalem und subborealem Oberjura. Stuttgarter Beitrage zur Naturkunde (B), 247, 1 - 69.","Jantschke, H. & Schweigert, G. (2020) The semimammatum and semiarmatum ammonite biohorizons (Late Oxfordium, Hypselum Zone) in the Upper Jurassic of SW Germany. Palaeodiversity, 13, 89 - 130. https: // doi. org / 10.18476 / pale. v 13. a 9"]}

Bucculentum bucculentum (Wehner, 1988) Fig. 1A, B, 2, 3 1988 Nodoprosopon bucculentum Wehner, p. 53, pl. 4, figs. 1–2, 6. 2009 Bucculentum bucculentum (Wehner, 1988) in: Schweitzer & Feldmann, 2009a: p. 79, fig. 3.3–3.4. Diagnosis. After Schweitzer & Feldmann (2009), amended. Carapace from longer than wide to almost quadrangular, widest across hepatic regions; rostrum tri-lobed, armoured with spines, central lobe being longest and depressed; augenrest positioned perpendicular to body long axis, laterally flanked by short ridge; suborbital spine strong, single, with several sharp terminal spines; cardiac region with three tubercles arranged along body long axis, distalmost tubercle being largest. Age and distribution. From at least Middle Oxfordian (Poland) to Early Kimmeridgian: Platynota-Divisum zones (Germany); the specimen SMNS 66654 described here as „ Bucculentum cf. bucculentum ” would extend the range of this species to the Late Kimmeridgian Pseudomutabilis Zone. Materials examined. Holotype SNS̲-̲SPG 1980 XXX 1255 (Fig. 2A, B), Biburg (Germany), age Early Kimmeridgian: Planula Zone (Schairer 1982; Schweitzer & Feldmann 2009a). Paratype SNS̲-̲SPG 1980 XXX 1254 (Fig. 2C), same locality and age. Specimen SNS̲-̲SPG 1987 I 55 (Fig. 2D, E), Unterwilflingen (Germany), age Early Kimmeridgian: Platynota-Divisum zones (Wehner 1988). Specimens from the Polish Jura Chain described and illustrated by Starzyk et al. (2012) were re-examined for this study; they come from two quarries: Ogrodzieniec (Lower and Middle Oxfordian) and Niegowonice (from Cordatum to Transversarium zones, except discontinuous Mariae Zone; Głowniak 2006). New material: MAB 3572 (Fig. 3 E, F), Geisingen (Germany; N 47 o 93’, E 8 o 67’), age Late Kimmeridgian: Mutabilis/Acanthicum Zone (Van Bakel et al. 2008); MAB 3577, MAB 3579 (Fig. 3G), MAB 3582a (positive, Fig. 3A) and MAB 3582b (negative, Fig. 3B, C, D), Plettenberg quarry n. Balingen, Germany; all coll. R. H. B. Fraaije), age Early Kimmeridgian, Planula Zone (Schweigert & Callomon 1997; Jantschke & Schweigert 2020); I-F/MP/6210/1578/11 (ISEA) and I-F/MP/4648/1534/08 (ISEA), Wysoka n. Łazy (N 50 o 25’44’’, E 19 o 21’13’’), Polish Jura Chain, age Middle Oxfordian (Głowniak 2002). Additional description. The rostrum is tri-lobed, the central lobe being the longest and directed downwards while the two flanking lobes are raised; together, they form a kind of a scoop armoured with terminal rows of sharp spines. The entire rostrum, or almost so, is preserved only in the specimens MAB 3572 from Plettenberg and I-F/ MP/6210/1578/11 from Poland (Fig. 3E, H, respectively), but it is fragmentarily present in several other specimens, including the holotype (Fig. 2A, B) and specimen SNSB-BSPG 1987 I 55 (Fig. 2D, E). The augenrest is convex and directed frontally, i.e, at an angle c. 90 o to the body long axis. The suborbital spine is single, massive, and oval in cross section. The distal portion of this spine is armoured with few teeth (traces of four teeth are visible in two specimens, Fig. 2B and 3G). The epibranchial region of the holotype (Fig. 2A) and MAB 3572 has six ridges ending in rows of tubercles, fan-like spreading just over the cardiac region; in other specimens this feature is weakly expressed or absent. Along the lateral sides there are strong spines (Fig. 3D, F, G). Remarks. Noteworthy is the specimen MAB 3852, preserved in positive (convex) and negative (concave) parts (Fig. 3A, B, resp.), which supplement each other with details; the concave mould of the rostrum with white depressions left by the warts is completely preserved in the negative part (Fig. 3C); this part retained also the traces of lateral spines along the metabranchial region (Fig. 3D), and almost complete cover of white cuticle, visible from the inner side. The specimen MAB 3572 (Fig. 3F) shows that the pattern of tubercles is preserved both on the cuticle and on the surface of the mould beneath., Published as part of Krzemińska, Ewa, Starzyk, Natalia, Fraaije, René H. B., Schweigert, Günter & Lukeneder, Alexander, 2021, Jurassic brachyurans of the genus Bucculentum, pp. 395-410 in Zootaxa 5032 (3) on pages 396-400, DOI: 10.11646/zootaxa.5032.3.5, http://zenodo.org/record/5497036, {"references":["Wehner, G. (1988) Uber die Prosopiden (Crustacea, Decapoda) des Jura. Inaugural-Dissertation zur Erlangung des Doktorgrades der Fakultat fur Geowissenschaften der Ludwig-Maximilians-Universitat zu Munchen, Munchen, 154 pp.","Schairer, G. & Yamani, S. - A. (1982) Die Schwammkalke von Biburg bei Weissenburg / Bayern (Oberoxford, Sudliche Frankenalb). Allgemeine Ubersicht. Mitteilungen der Bayerischen Staatssammlung fur Palaontologie und historische Geologie, 22, 9 - 17.","Glowniak, = E. (2006) Correlation of the zonal schemes at the Middle-Upper Oxfordian (Jurassic) boundary in the Submediterranean Province: Poland and Switzerland. Acta Geologica Polonica, 56, 33 - 50.","Bakel, B. W. M. van, Fraaije, R. H. B., Jagt, J. W. M. & Artal, P. (2008) An unexpected diversity of Late Jurassic hermit crabs (Crustacea, Decapoda, Anomura) in Central Europe. Neues Jahrbuch fur Geologie und Palaontologie, Abhandlungen, 250, 137 - 156. https: // doi. org / 10.1127 / 0077 - 7749 / 2008 / 0250 - 0137","Schweigert, G. & Callomon, J. H. (1997) Der bauhini - Faunenhorizont und seine Bedeutung fur die Korrelation zwischen tethyalem und subborealem Oberjura. Stuttgarter Beitrage zur Naturkunde (B), 247, 1 - 69.","Jantschke, H. & Schweigert, G. (2020) The semimammatum and semiarmatum ammonite biohorizons (Late Oxfordium, Hypselum Zone) in the Upper Jurassic of SW Germany. Palaeodiversity, 13, 89 - 130. https: // doi. org / 10.18476 / pale. v 13. a 9","Glowniak, E. (2002) The ammonites of the family Perisphinctidae from the Plicatilis Zone (lower Middle Oxfordian) of the Pol- ish Jura Chain (Central Poland); their taxonomy, phylogeny and biostratigraphy. Acta Geologica Polonica, 52, 307 - 364."]}

Genus Bucculentum Schweitzer & Feldmann, 2009 Diagnosis. After Schweitzer & Feldmann (2009), amended. Carapace roughly rectangular; rostrum tri-lobed, projected well beyond frontal margin of carapace; orbit appearing to be placed under rostrum, augenrest on hepatic region of dorsal carapace, bounded by spines or ridges; hepatic region strongly inflated; groove (named here augenrest groove) leading from mid dorsal margin of augenrest to cervical groove; cervical and branchio-cardiac grooves deep; urogastric region not well defined, depressed below level of metagastric and cardiac regions; cardiac region elevated, its dominant tubercle making highest point of carapace. Type species: Nodoprosopon bucculentum Wehner, 1988., Published as part of Krzemińska, Ewa, Starzyk, Natalia, Fraaije, René H. B., Schweigert, Günter & Lukeneder, Alexander, 2021, Jurassic brachyurans of the genus Bucculentum, pp. 395-410 in Zootaxa 5032 (3) on page 396, DOI: 10.11646/zootaxa.5032.3.5, http://zenodo.org/record/5497036, {"references":["Wehner, G. (1988) Uber die Prosopiden (Crustacea, Decapoda) des Jura. Inaugural-Dissertation zur Erlangung des Doktorgrades der Fakultat fur Geowissenschaften der Ludwig-Maximilians-Universitat zu Munchen, Munchen, 154 pp."]}

Bucculentum horstkuscheli, n. sp. Fig. 1E, F, 6 Diagnosis. Hepatic regions large, much wider than metabranchial regions; metabranchial region not expanded laterally; augenrest directed laterad at c. 60 o to body long axis and aligned with proximal portions of hepatic region; suborbital spine wide, directed outwards and downwards, and ending in two short, triangular teeth; cardiac region with one distalmost dominant tubercle accompanied anteriorly by row of small tubercles. Etymology. Trivial name is dedicated to Horst Kuschel (Faurndau), who found and donated the holotype of this species. Material examined. Holotype: # SMNS 70607 (leg. H. Kuschel), Germany: Bad Überkingen-Oberböhringen, near Geislingen a. d. Steige. Age: Late Kimmeridgian: Acanthicum Zone (Fraaije et al. 2017). Description. The holotype represents an internal mould, with only the traces of the white cuticle in the grooves. It is excellently preserved and symmetrical, lacking only the rostrum. The hepatic regions are very wide, c. 1.4x wider than the mesobranchial region and 1.2x wider than the metabranchial region. The frontal portions containing the augenrests and anterior portions of hepatic regions are aligned, obliquely set to the long axis at an angle of 57 o, symmetrical on both sides. Augenrests are almost perpendicular to the plane of carapace, only very slightly shifted dorsally (Fig. 6B), at an angle of c. 80 o to the upper surface of the carapace; they are laterally flanked by single, broad, triangular tubercles. The suborbital spine is very broad, supporting most of the lower margin of the augenrest, directed down- and outwards, and terminating in two short, triangular teeth (Fig. 6B, C, arrows). The epibranchial region is narrow; the cervical groove is almost straight. The cardiac region is equipped at its distal end with a large tubercle (which is the highest point of the carapace) and a median row of small tubercles towards the mesobranchial region. The metabranchial regions are narrow, almost rectangular; the distal end is broad, stretched over the entire distal portion of the metabranchial region and upturned. Remarks. The new species resembles B. bachmayeri in having a large hepatic region, a divided suborbital spine, and a cardiac region with one large tubercle, but differs in having the augenrests directed outwards and positioned obliquely to body long axis. The suborbital spine is divided into two short, triangular lobes, unlike the long, thin prongs in B. bachmayeri.

Bucculentum bachmayeri Schweitzer & Feldmann, 2009 Fig. 1C, D, 5 2009a Bucculentum bachmayeri in: Schweitzer & Feldmann, Ann. Naturhist. Mus. Wien 110 A: 81, fig. 1.4, 3.1, 3.2. Diagnosis. Carapace widest across hepatic regions which are more expanded laterally than in Bucculentum bucculentum, but flattened (in frontal view); augenrest positioned perpendicular to body long axis, bounded by small tubercles on outer-orbital edge; suborbital spine bifid, its two prongs being thin and long; cardiac region small, ovate, with one dominant, sharp tubercle. Material examined. Holotype, NHMW 1990 /0041/3376, near Dörfles, Vienna, Ernstbrunn Limestone, Tithonian. Specimen SMNS 70606: Bad Überkingen-Oberböhringen near Geislingen an der Steige, southern Germany (N 48 o 61’, E 9 o 79’); Upper Kimmeridgian, Pseudomutabilis Zone (leg. H. Kuschel). Additional description. The frontal view of the holotype exposes a very characteristic feature of this species: the hepatic regions are broad and flattened when compared to B. bucculentum, so that the distance between the upper margin of the augenrest and the surface of the hepatic region over it is very short (marked with an arrow in Fig. 5A); the same character is visible in the specimen SMNS 70606 (Fig. 5C, arrow). The area of the augenrest is flat and smaller than in B. bucculentum; the plane of the augenrest is perpendicular to the long body axis, similar to B. bucculentum. The suborbital spine in the holotype is bifid, and its two prongs are thin (Fig. 5B); in the specimen SMNS 70606 these spines are not preserved. The lateral sides of carapace are endowed with strong, short spurs partially preserved in SMNS 70606 (Fig. 5E, F). The known specimens delimit the range of this species to Late Kimmeridgian-Tithonian., Published as part of Krzemińska, Ewa, Starzyk, Natalia, Fraaije, René H. B., Schweigert, Günter & Lukeneder, Alexander, 2021, Jurassic brachyurans of the genus Bucculentum, pp. 395-410 in Zootaxa 5032 (3) on pages 401-402, DOI: 10.11646/zootaxa.5032.3.5, http://zenodo.org/record/5497036

Os camarões-alevinos (Decapoda: Caridea: Alpheidae) constituem um dos grupos-modelo para inferências que visam compreender a evolução de características estruturais, comportamentais e ecológicas complexas entre invertebrados marinhos bentônicos. Apesar de ser um táxon super-diversificado com uma ampla distribuição geográfica, o registro fóssil de alpheid ainda é pouco conhecido. No entanto, os dados aqui apresentados mostram que as pontas dos dedos fortemente calcificadas das garras de agarramento do alpheid não são incomuns no registro fóssil e devem ser consideradas um novo tipo de mesofossil. Os vestígios cenozóicos aqui analisados ​​representam uma correspondência estrutural convincente com espécies existentes de Alpheus Baseado na presença de vários morfotipos distintos de garras de dedos, a principal radiação das linhagens de Alpheus é Estima-se que tenha ocorrido já aos 18 anos. Além disso, o registro fóssil mais antigo de alpheids em geral pode agora ser confirmado para o Oligoceno Superior (27-28 mya), proporcionando assim uma nova idade mínima para todo o grupo, bem como o primeiro ponto de calibração confiável para inferências filogenéticas profundas. Alpheid snapping shrimps (Decapoda: Caridea: Alpheidae) constitute one of the model groups for inferences aimed at understanding the evolution of complex structural, behavioural, and ecological traits among benthic marine invertebrates. Despite being a super-diverse taxon with a broad geographical distribution, the alpheid fossil record is still poorly known. However, data presented herein show that the strongly calcified fingertips of alpheid snapping claws are not uncommon in the fossil record and should be considered a novel type of mesofossil. The Cenozoic remains analysed here represent a compelling structural match with extant species of Alpheus. Based on the presence of several distinct snapping claw-fingertip morphotypes, the major radiation of Alpheus lineages is estimated to have occurred as early as 18 mya. In addition, the oldest fossil record of alpheids in general can now be confirmed for the Late Oligocene (27–28 mya), thus providing a novel minimum age for the entire group as well as the first reliable calibration point for deep phylogenetic inferences.

Fraaije, René H. B., Van Bakel, Barry W. M., Jagt, John W. M., Machalski, Marcin (2015): A new hermit crab (Anomura, Paguroidea) from the upper Albian (Cretaceous) of Annopol, Poland. Zootaxa 3955 (4): 588-594, DOI: http://dx.doi.org/10.11646/zootaxa.3955.4.9