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| Natura: | Artículo científico |
| Lingua: | en |
| Pubblicazione: |
Universidad Nacional Autónoma de México
2015
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=57240685009 |
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Sommario:
- Kimmeridgian pliosaurids (Sauropterygia, Plesiosauria) from Tlaxiaco, Oaxaca, southern Mexico Jair Israel Barrientos-Lara Marta S. Fernández Jesús Alvarado-Ortega Ciencias de la Tierra Jurassic Tlaxiaco Pliosauridae Liopleurodon Sabinal formation Fossil remains of two specimens of the family Pliosauridae aredescribed in the present manuscript. These fossils are from theKimmeridgian shallow marine strata belonging to the informallyknown Sabinal formation deposited in the Tlaxiaco Basin, which areexposed in Yosobé, near Tlaxiaco town, Oaxaca State, southern Mexico.The first of these specimens consists of a fragment of premaxilla withteeth, which show diagnostic characters that allow its taxonomicalidentification as member of the genus Liopleurodon. The second specimenis preserved by a significantly higher number of bone elements;however, this is only identified as a member of the family Pliosauridae.Despite the shortage of the pliosaurs fossil record so far recovered inYosobé, the specimens described here significantly contribute to theknowledge of this extinct group. On the one hand, these Kimmeridgianfossils are the southernmost representatives of these reptiles discoveredin North America and the first collected in deposits of the HispanicCorridor. On the other hand, the presence of the genus Liopleurodonin this fossil locality confirms its biogeographical distribution into thewestern domain of the Tethys Sea, beyond Europe. 2015 artículo científico 1026-8774 https://www.redalyc.org/articulo.oa?id=57240685009 en http://www.redalyc.org/revista.oa?id=572 Revista Mexicana de Ciencias Geológicas application/pdf Universidad Nacional Autónoma de México Revista Mexicana de Ciencias Geológicas (México) Num.2 Vol.32