• Source: Charco Azul Formation

Charco Azul Formation is a geologic formation of the Charco Azul Group in western Panama and southeastern Costa Rica. It preserves gastropod fossils dating back to the Pliocene period.




Description


The Charco Azul Formation comprises tuffaceous shales deposited in a deep marine environment The formation unconformably underlies the Armuelles Formation. The formation is correlated to the Jama and Canoa Formations of Ecuador.




Fossil content


These fossils have been reported from the formation:

Strombina (Recurvina) penita, Strombina (Recurvina) recurva
Distorsio decussata
Marsupina bufo, M. nana




See also



List of fossiliferous stratigraphic units in Costa Rica
List of fossiliferous stratigraphic units in Panama




References






Further reading


P. Jung. 1989. Revision of the Strombina-group (Gastropoda; Columbellidae), fossil and living. Schweierische Paläontologische Abhandlungen 111:1-298

Kata Kunci Pencarian:

• Charco Azul Formation
• Charco Azul Group
• Canoa Formation
• Jama Formation
• List of fossiliferous stratigraphic units in Central America
• Penita Formation
• Leucosyrinx nicoya
• Armuelles Formation
• Volcanic crater lake
• Joaquín Balaguer