Two Lower Cretaceous (Albian) fossil holothurians (Echinodermata) from Tepexi de Rodriguez, Puebla, Mexico
Por:
Applegate, SP, Buitron-Sanchez, BE, Solis-Marin, FA, Laguarda-Figueras, A
Publicada:
20 mar 2009
Categoría:
Agricultural and Biological Sciences (miscellaneous)
Resumen:
Two new genera and species of well-preserved fossil holothurians are described from the Lower Cretaceous (Albian) of Tepexi de Rodriguez, Puebla, central Mexico. Parapsolus tlayuensis is a psolid, and Paleopentacta alencasterae is a cucumariid. Paleopentacta alencasterae is the first complete holothurian fossil known to have two types of body wall ossicles preserved. The presence of the families Psolidae and Cucumariidae suggests that the local habitat was a hard substrate. The two holothurian species described here are interpreted as shallow water-suspension feeding species.
Filiaciones:
Applegate, SP:
Univ Nacl Autonoma Mexico, Inst Geol, Mexico City 04510, DF, Mexico
Buitron-Sanchez, BE:
Univ Nacl Autonoma Mexico, Inst Geol, Mexico City 04510, DF, Mexico
Solis-Marin, FA:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Lab Sistemat & Ecol Equinodermos, Mexico City 04510, DF, Mexico
Laguarda-Figueras, A:
Univ Nacl Autonoma Mexico, Inst Ciencias Mar & Limnol, Lab Sistemat & Ecol Equinodermos, Mexico City 04510, DF, Mexico
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