Almejas Formation

Almejas Formation
Stratigraphic range: Messinian-Zanclean ~7.2–3.6 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Type	Formation
Lithology
Primary	Sandstone
Other	Conglomerate
Location
Region	Baja California
Country	Mexico

The Almejas Formation is a geologic formation in Mexico. It preserves fossils dating back to the Late Miocene to Early Pliocene of the Neogene period.

Fossil content

Various fossils have been found in the formation:[1]

Mammals

• Aivukus cedrosensis
• Albireo whistleri
• Balaenoptera sp.
• Denebola brachycephala
• Dusignathus santacruzensis
• Parapontoporia pacifica
• Piscolithax boreios
• Piscolithax tedfordi
• aff. Plesiocetus sp.
• Praekogia cedrosensis
• Thalassoleon mexicanus

Birds

• Cerorhinca minor
• Mancalla cedrosensis
• ?Megapaloelodus opsigonus
• Morus sp.
• Puffinus tedfordi
• ?Synthliboramphus sp.

Fishes

• Carcharodon cf. carcharias
• Carcharhinus sp.
• Megalodon

See also

• List of fossiliferous stratigraphic units in Mexico

References

1. Arroyo Delphin at Fossilworks.org