Mecaster texanus (Echinoidea) from Turonian-Coniacian strata in the Sergipe-Alagoas Basin, Brazil

Carnets de Geologie: Notebooks of geology

关键词: Echinodermata;    Spatangoida;    Cretaceous;    South America;    comparison;   

DOI  :  10.4267/2042/64287

学科分类：地质学

来源: Carnets de Geologie

【 摘 要 】

The spatangoid echinoid Mecaster texanus (Roemer) was first described from the Austin Chalk in Texas (USA). In northeast Brazil, this species was recorded from the Upper Cretaceous (Turonian-Coniacian) Jandaíra Formation in the Potiguar Basin. Here we extend the palaeogeographical distribution of M. texanus southwards to the Sergipe-Alagoas Basin, where this species occurs in the Turonian-Coniacian Cotinguiba Formation. A key to identification of spatangoids from the Cretaceous-Cenozoic sequence at Sergipe-Alagoas is added and considerations about other spatangoid species from that basin are presented.

【 授权许可】

CC BY