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Comparative paleohistology in osteoderms of Pleistocene Panochthus sp. Burmeister, 1886 and Neuryurus sp. Ameghino, 1889 (Xenarthra, Glyptodontidae)

Authors :
Yumi Asakura
Paulo Victor Luiz Gomes da Costa Pereira
Jorge Luiz Lopes da Silva
Édison Vicente Oliveira
Source :
Comptes Rendus Palevol. 16:795-803
Publication Year :
2017
Publisher :
Elsevier BV, 2017.

Abstract

Xenarthran osteoderms are integumentary bones with high fossilization potential presenting a high degree of morphological and histological diversity. Here, new data on the osteoderms histology of two glyptodonts, Panochthus and Neuryurus are presented. The poor spatial organization of the mineralized fibers and a large trabecular area in the middle zone identified in Neuryurus indicate a different bone pattern than the one found in Panochthus, which is mainly characterized by a middle zone with less spongiosa. Through the Bone Profiler program, the degree of compactness of the specimens was obtained, with about 70% for Neuryurus sp. and approximately 90% for Panochthus sp., showing the difference in bone pattern. These values confirm the visible difference in the histological patterns of these taxa, especially in the middle zone. This work demonstrates the microstructural variation studied in osteoderms and shows the importance of paleohistology as a starting point for a better understanding of extinct taxa.

Details

ISSN :
16310683
Volume :
16
Database :
OpenAIRE
Journal :
Comptes Rendus Palevol
Accession number :
edsair.doi...........c2bf6a84af22f10d57daffab7b52f99b
Full Text :
https://doi.org/10.1016/j.crpv.2017.05.006