Search

Your search keyword '"Landman, Neil H."' showing total 1,142 results
Start Over Author "Landman, Neil H."
1,142 results on '"Landman, Neil H."'

4. Cephalopods from the Cretaceous-Paleogene (K-Pg) boundary interval on the Brazos River, Texas, and extinction of the ammonites

Author

Witts, James D., Landman, Neil H., Garb, Matthew P., Irizarry, Kayla M., Larina, Ekaterina, Thibault, Nicolas, Razmjooei, Mohammed J., Yancey, Thomas E., Myers, Corinne E., American Museum of Natural History Library, Witts, James D., Landman, Neil H., Garb, Matthew P., Irizarry, Kayla M., Larina, Ekaterina, Thibault, Nicolas, Razmjooei, Mohammed J., Yancey, Thomas E., and Myers, Corinne E.

Subjects
Ammonoidea, Brazos River Valley, Cephalopoda, Fossil, Cretaceous, Cretaceous-Paleogene Extinction, Mollusks, Fossil, Paleontology, Texas
Published
2021

8. Geochemistry of Cold Hydrocarbon Seeps: An Overview

Author

Cochran, J. Kirk, Landman, Neil H., Jakubowicz, Michał, Brezina, Jamie, Naujokaityte, Jone, Rashkova, Ana, Garb, Matthew P., Larson, Neal L., Landman, Neil H., Series Editor, Harries, Peter J., Series Editor, Kaim, Andrzej, editor, and Cochran, J. Kirk, editor

Published
2022
Full Text
View/download PDF

10. Large scaphitid ammonites (Hoploscaphites) from the Upper Cretaceous (upper Campanian-lower Maastrichtian) of North America : endless variation on a single theme

Author

Landman, Neil H., Kennedy, W. J. (William James), Grier, Joyce C., Larson, Neal L., Grier, James W, Linn, Tom, Tackett, Lydia, Jicha, Brian R., American Museum of Natural History Library, Landman, Neil H., Kennedy, W. J. (William James), Grier, Joyce C., Larson, Neal L., Grier, James W, Linn, Tom, Tackett, Lydia, and Jicha, Brian R.

Subjects
Ammonoidea, Bearpaw Formation, Cretaceous, Mollusks, Fossil, North America, Paleontology, Pierre Shale, West (U.S.)
Published
2020

12. Description of two species of Hoploscaphites (Ammonoidea, Ancyloceratina) from the Upper Cretaceous (Lower Maastrichtian) of the U.S. Western Interior

Author

Landman, Neil H., Kennedy, W. J. (William James), Larson, Neal L., Grier, Joyce C., Grier, James W., Linn, Tom, American Museum of Natural History Library, Landman, Neil H., Kennedy, W. J. (William James), Larson, Neal L., Grier, Joyce C., Grier, James W., and Linn, Tom

Subjects
Ammonoidea, Bearpaw Formation, Cretaceous, Great Plains, Hoploscaphites criptonodosus, Hoploscaphites macer, Mollusks, Fossil, Paleontology, Pierre Shale, Saskatchewan, West (U.S.)
Published
2019

13. Intraspecific variation through ontogeny in late Cretaceous ammonites /

Author

Klein, Carina, Landman, Neil H., American Museum of Natural History Library, Klein, Carina, and Landman, Neil H.

Subjects
Ammonoidea, Cretaceous, Development, Great Plains, Mollusks, Fossil, Ontogeny, Paleontology, Scaphites whitfieldi, Variation, West (U.S.)
Published
2019

16. Rapid ocean acidification and protracted Earth system recovery followed the end-Cretaceous Chicxulub impact

Author

Henehan, Michael J, Ridgwell, Andy, Thomas, Ellen, Zhang, Shuang, Alegret, Laia, Schmidt, Daniela N, Rae, James WB, Witts, James D, Landman, Neil H, Greene, Sarah E, Huber, Brian T, Super, James R, Planavsky, Noah J, and Hull, Pincelli M

Subjects
Physical Geography and Environmental Geoscience, Biological Sciences, Ecology, Earth Sciences, Climate Change Science, Life Below Water, Acids, Animals, Carbon Cycle, Carbon Isotopes, Earth, Planet, Foraminifera, Fossils, History, Ancient, Hydrogen-Ion Concentration, Oceans and Seas, Seawater, Cretaceous/Paleogene boundary, ocean acidification, boron isotopes, mass extinction, GENIE model
Abstract

Mass extinction at the Cretaceous-Paleogene (K-Pg) boundary coincides with the Chicxulub bolide impact and also falls within the broader time frame of Deccan trap emplacement. Critically, though, empirical evidence as to how either of these factors could have driven observed extinction patterns and carbon cycle perturbations is still lacking. Here, using boron isotopes in foraminifera, we document a geologically rapid surface-ocean pH drop following the Chicxulub impact, supporting impact-induced ocean acidification as a mechanism for ecological collapse in the marine realm. Subsequently, surface water pH rebounded sharply with the extinction of marine calcifiers and the associated imbalance in the global carbon cycle. Our reconstructed water-column pH gradients, combined with Earth system modeling, indicate that a partial ∼50% reduction in global marine primary productivity is sufficient to explain observed marine carbon isotope patterns at the K-Pg, due to the underlying action of the solubility pump. While primary productivity recovered within a few tens of thousands of years, inefficiency in carbon export to the deep sea lasted much longer. This phased recovery scenario reconciles competing hypotheses previously put forward to explain the K-Pg carbon isotope records, and explains both spatially variable patterns of change in marine productivity across the event and a lack of extinction at the deep sea floor. In sum, we provide insights into the drivers of the last mass extinction, the recovery of marine carbon cycling in a postextinction world, and the way in which marine life imprints its isotopic signal onto the geological record.

Published
2019

17. Lethal injuries on the scaphitid ammonoid Hoploscaphites nicolletii (Morton, 1842) in the Upper Cretaceous Fox Hills Formation, South Dakota, USA: Lethal injuries on the scaphitid ammonoid Hoploscaphites nicolletii (Morton, 1842): A. Tajika et al.

Author

Tajika, Amane, Rashkova, Anastasia, Landman, Neil H., and Klompmaker, Adiël A.

Subjects
MARINE invertebrates, DECAPODA, BODY size, AMMONOIDEA, LIFE sciences
Abstract

Predator–prey relationships are considered a major driver for the evolution of organisms, and thus contributed to shaping morphology, ecology, and diversity. During the Late Cretaceous of North America, ammonoid cephalopods were one of the most abundant and diverse marine invertebrates. Despite frequent reports of shell breakage in ammonoids, little is known pertaining to the frequency, position, and size of the shell break through a stratigraphic succession. In this study, we analyze an extensive collection of the scaphitid ammonoid Hoploscaphites nicolletii, which exhibits shell breakage, from the Upper Cretaceous (Maastrichtian) Fox Hills Formation in South Dakota, USA. We focus on four upper Maastrichtian assemblage zones listed stratigraphically from bottom to top—the lower nicolletii Assemblage Zone (LNAZ), the Limopsis-Gervillia Assemblage Zone (LGAZ), the upper nicolletii Assemblage Zone (UNAZ), and the Protocardia-Oxytoma Assemblage Zone (POAZ). Within the collection, we observed two primary types of breakage: ventral and lateral, each displaying a relatively consistent geometry. Lateral breaks, measuring a few centimeters, represent about 20–40% of the maximum conch diameter. Ventral breaks are slightly larger, representing 30–70% of the diameter. Both breakage types occur in the body chamber at approximately 90° from the aperture extending to near the last septum. We find that the incidence of injury increased from 6.6 to 13.7% with some fluctuation across the zones. The breakage size relative to body size does not exhibit a clear change across the assemblage zones. Additionally, no significant difference is apparent in the body size between injured and uninjured specimens within each zone. A weak positive correlation between the size of lateral breaks and maximum conch diameter in LNAZ suggests a tendency for larger predators to target larger individuals. Given the consistency of geometry and size, we presume that these breaks represent lethal injuries from durophagous predators. We propose coleoid cephalopods as the likely culprits for ventral injuries, although fish and crustaceans are plausible alternatives. Concerning lateral injuries, decapod crustaceans appear to be the most probable durophagous predators. [ABSTRACT FROM AUTHOR]

Published
2025
Full Text
View/download PDF

20. Allostratigraphy and biostratigraphy of the Upper Cretaceous (Coniacian-Santonian) Western Canada Foreland Basin

Author

Landman, Neil H., Plint, A. Guy, Walaszczyk, Ireneusz, Hooper, Beth (Elizabeth A.), Grifi, Meriem D., Gröcke, D. R. (Darren R.), Trabucho Alexandre, João P., Jarvis, I. (Ian), American Museum of Natural History Library, Landman, Neil H., Plint, A. Guy, Walaszczyk, Ireneusz, Hooper, Beth (Elizabeth A.), Grifi, Meriem D., Gröcke, D. R. (Darren R.), Trabucho Alexandre, João P., and Jarvis, I. (Ian)

Subjects
Alberta, Canada, Western, Cretaceous, Geology, Geology, Stratigraphic, Mollusks, Fossil, Paleontology, Paleontology, Stratigraphic, Sedimentary basins, Stratigraphic correlation
Published
2017

24. The mitochondrial genome of Allonautilus (Mollusca, Cephalopoda) : base composition, noncoding-region variation, and phylogenetic divergence

Author

Groth, Jeffrey G., Arbisser, Ilana, Landman, Neil H., Barrowclough, George F., American Museum of Natural History Library, Groth, Jeffrey G., Arbisser, Ilana, Landman, Neil H., and Barrowclough, George F.

Subjects
Allonautilus, Allonautilus scrobiculatus, Cephalopoda, Genome mapping, mitochondrial DNA, Mollusks, Nautilidae, Papua New Guinea, Phylogeny
Published
2015

27. Inquilinism of a baculite by a dynomenid crab from the Upper Cretaceous of South Dakota

Author

Landman, Neil H., Fraaije, René H. B., Klofak, Susan M., Larson, Neal L., Bishop, Gale A., Kruta, Isabelle, American Museum of Natural History Library, Landman, Neil H., Fraaije, René H. B., Klofak, Susan M., Larson, Neal L., Bishop, Gale A., and Kruta, Isabelle

Subjects
Ammonoidea, Baculites, Baculitidae, Butte County, Cephalopoda, Fossil, Commensalism, Cretaceous, Crustacea, Fossil, Decapoda (Crustacea), Fossil, Ferricorda kimberlyae, Paleontology, Pierre Shale, South Dakota
Published
2014

29. A new species of Hoploscaphites (Ammonoidea, Ancyloceratina) from cold methane seeps in the Upper Cretaceous of the U.S. Western Interior /

Author

Landman, Neil H., Kennedy, W J, Cobban, William Aubrey, 1916, Larson, Neal L., Jorgensen, Steven D., American Museum of Natural History Library, Landman, Neil H., Kennedy, W J, Cobban, William Aubrey, 1916, Larson, Neal L., and Jorgensen, Steven D.

Subjects
Ammonoidea, Cretaceous, Hoploscaphites gilberti, Mollusks, Fossil, Paleontology, Pierre Shale, West (U.S.)
Published
2013

30. Development of the embryonic shell structure of Mesozoic ammonoids

Author

Tanabe, Kazushige, Kulicki, Cyprian, Landman, Neil H., American Museum of Natural History Library, Tanabe, Kazushige, Kulicki, Cyprian, and Landman, Neil H.

Subjects
Aconeceras, Ammonoidea, Cephalopoda, Fossil, Embryology, Mesozoic, Paleontology, Russia (Federation), Ulʹi︠a︡novsk
Published
2008

32. Jaws of late Cretaceous placenticeratid ammonites : how preservation affects the interpretation of morphology

Author

Landman, Neil H., Tsujita, Cameron J., Cobban, William Aubrey, 1916, Larson, Neal L., Tanabe, Kazushige, Flemming, Roberta L., American Museum of Natural History Library, Landman, Neil H., Tsujita, Cameron J., Cobban, William Aubrey, 1916, Larson, Neal L., Tanabe, Kazushige, and Flemming, Roberta L.

Subjects
Alberta, Ammonoidea, Bearpaw Formation, Cretaceous, Great Plains, Hokkaido, Japan, Jaws, Metaplacenticeras subtilistriatum, Mollusks, Fossil, Paleontology, Pierre Shale, Placenticeras meeki
Published
2006

35. Cephalopods from the Cretaceous/Tertiary boundary interval on the Atlantic Coastal Plain, with a description of the highest ammonite zones in North America

Author

Landman, Neil H., Johnson, Ralph O., Edwards, Lucy E., American Museum of Natural History Library, Landman, Neil H., Johnson, Ralph O., and Edwards, Lucy E.

Subjects
Ammonoidea, Atlantic Coast, Atlantic Coast (U.S.), Cephalopoda, Fossil, Chesapeake Bay (Md. and Va.), Cretaceous, Maryland, Mollusks, Fossil, North Carolina, Paleontology, Stratigraphic correlation, United States
Published
2004

38. Santonian ammonites from the Blossom Sand in northeast Texas

Author

Kennedy, W. J. (William James), Landman, Neil H., Cobban, William Aubrey, 1916, American Museum of Natural History Library, Kennedy, W. J. (William James), Landman, Neil H., and Cobban, William Aubrey, 1916

Subjects
Ammonoidea, Baculites, Cretaceous, Glyptoxoceras texanum, Mollusks, Fossil, Paleontology, Placenticeras syrtale, Texas
Published
2001

44. Libbie Henrietta Hyman : life and contributions

Author

Winston, Judith E., Landman, Neil H., Hyman, Libbie Henrietta, 1888-1969, American Society Of Zoologists. Meeting Atlanta, Ga.) 1991, American Museum of Natural History Library, Winston, Judith E., Landman, Neil H., Hyman, Libbie Henrietta, 1888-1969, and American Society Of Zoologists. Meeting Atlanta, Ga.) 1991

Subjects
American Museum of Natural History, Anatomy, Comparative, Biography, History, Hyman, Libbie Henrietta, Invertebrates, Research, United States, Zoologists
Published
1999

48. Ammonites from the Weno limestone (Albian) in northeast Texas

Author

Kennedy, W. J. (William James), Landman, Neil H., American Museum of Natural History Library, Kennedy, W. J. (William James), and Landman, Neil H.

Subjects
Ammonoidea, Cretaceous, Mollusks, Fossil, Paleontology, Texas
Published
1998

49. Maastrichtian ammonites from the Severn Formation of Maryland

Author

Kennedy, W. J. (William James), Cobban, William Aubrey, 1916, Landman, Neil H., American Museum of Natural History Library, Kennedy, W. J. (William James), Cobban, William Aubrey, 1916, and Landman, Neil H.

Subjects
Ammonoidea, Cretaceous, Maryland, Paleontology
Published
1997

Catalog

Books, media, physical & digital resources
See catalog results