New record of Pseudocidaris sp. (Echinoidea:Hemicidaridae) of lower Cretaceous (Valanginian-Hauterivian) from Zapatoca, (Santander Colombia).

In this study it is reported and described a regular echinoderm of Pseudocidaris genus in the Rosablanca Formation of Lower Cretaceous at the municipality of Zapatoca (Santander, Colombia). The species shows little sinuosity in the ambulacra and a dyciclic apical disc. An exploratory phylogenetic an...

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Bibliographic Details
Main Authors:	Jerez-Jaimes, Javier Hernando, Osma-Duarte, Alvaro Sergio, Puentes-Pérez, Joan Sebastián
Format:	Online
Language:	spa
Published:	Universidad Pedagógica y Tecnológica de Colombia - UPTC 2015
Subjects:	fossil rosablanca formation regular urchin sea urchin erizo de mar erizo regular formación rosablanca fósil
Online Access:	https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/4258

Description
Summary:	In this study it is reported and described a regular echinoderm of Pseudocidaris genus in the Rosablanca Formation of Lower Cretaceous at the municipality of Zapatoca (Santander, Colombia). The species shows little sinuosity in the ambulacra and a dyciclic apical disc. An exploratory phylogenetic analysis showed that the lineage of the Zapatoca species was originated in the Callovian with P. Romani and that it is related with P. lusitanica (Oxfordian) and P. clunifera ( Barremian-Aptian)