Carbonera Formation, Mexico

The Carbonera Formation in Mexico is a Cretaceous geologic formation that preserves fossils from the Berriasian through Hauterivian stages of the Early Cretaceous. Its significance rests in the marine life recorded in its rocks, which include ammonites such as Maderia casitensis, Mexicanoceras laticostatum, and M. multicostatum; bivalves including Exogyra reedi and Plicatula pulchra; as well as gastropods, the brachiopod Ptilorhynchia (Proteorhynchia) durangensis, and the coral Paretallonia hispaniensis. Together, these fossils make the formation an important source for understanding Early Cretaceous marine environments in Mexico.

Zacatecas · Mexico