Earth:Almejas Formation

Short description: Geologic formation in Mexico

Almejas Formation Stratigraphic range: Messinian-Zanclean ~7.2–3.6 Ma PreЄ Є 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:

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