Apón Formation


The Apón Formation is a geological formation in northwestern Venezuela and northern Colombia, whose thick-bedded limestone interbedded with subordinate amounts of dark gray calcareous shale and sandy shale strata date back to the Early Cretaceous. Pterosaur remains of Ornithocheiridae indet. are among the fossils that have been recovered from the formation.

Fossil content

The following fossils, among others, have been found in the Apón Formation at Toas island: Spiroculina sp., Orbitolina concava, Gryphaeostrea, Amphidonte boussingaulti, Ostrea sp., Amphitriscoelus waringi, Requienia sp., Parahoplites sp., Cheloniceras sp., Quinqueloculina sp., Triloculina sp., and Panopea plicata in Río Negro.