Apón Formation
| Apón Formation Stratigraphic range: Early Cretaceous (Late Aptian) |
|
|---|---|
| Type | Geological formation |
| Underlies | Aguardiente Formation |
| Overlies | Río Negro Formation |
| Lithology | |
| Primary | Limestone |
| Other | Calcareous and sandy shales |
| Location | |
| Coordinates | 10°57′30″N 71°38′50″W / 10.95833°N 71.64722°WCoordinates: 10°57′30″N 71°38′50″W / 10.95833°N 71.64722°W |
| Region | La Guajira, Maracaibo Basin |
| Country |
 Colombia Venezuela
|
The Apón Formation is a geological formation in northwestern Venezuela (Maracaibo Basin) and northern Colombia (La Guajira), whose thick-bedded limestone interbedded with subordinate amounts of dark gray calcareous shale and sandy shale strata date back to the Early Cretaceous (Late Aptian epoch).Pterosaur remains of Ornithocheiridae indet. (= ?Anhangueridae indet.) are among the fossils that have been recovered from the formation.
The following fossils, among others, have been found in the Apón Formation at Toas island: Spiroculina sp., Orbitolina concava, Gryphaeostrea, Amphidonte (Ceratostreon) boussingaulti, Ostrea sp., Amphitriscoelus waringi, Requienia sp., Parahoplites sp., Cheloniceras sp., Quinqueloculina sp., Triloculina sp., and Panopea (Myopsis) plicata in Río Negro.
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