Ixcoy Formation

The Ixcoy Formation is a geologic formation in Guatemala. It preserves fossils dating back to the Cretaceous period. The upper part of the Ixcoy Formation is laterally equivalent with the Campur Formation of the Petén Basin in northern Guatemala.

Fossil content
The following fossils have been uncovered from the formation:
 * Biradiolites jamaicensis
 * Chubbina jamaicensis
 * Praeradiolites cf. verseyi
 * Senalveolina aubouini
 * Thyrastylon adhaerens
 * Texicaprina cf. orbiculata
 * Chondrodonta sp.
 * ?Planocaprina sp.