St. Marys Formation

The St. Marys Formation is a geologic formation in Maryland and Virginia, United States.

It preserves fossils dating back to the Miocene Epoch of the Neogene period.

It is the youngest Miocene formation present in the Calvert Cliffs and is part of the Chesapeake Group.

A diverse vertebrate paleofauna is known from the St. Marys Formation:

This article about a specific stratigraphic formation in Virginia is a stub.

Notorhynchus primigenius from the Calvert Formation
Hexanchus gigas teeth (not from St. Marys Formation)
Modern Rhincodon typus teeth
Carcharodon hastalis from the Calvert Formation
Carcharomodus escheri teeth from Germany
C. megalodon from Chile
Alopias latidens from the Old Church Formation
Hemipristis serra teeth (Bone Valley)
Carcharhinus falciformis upper teeth (modern)
Carcharhinus leucas teeth (modern)
Carcharhinus perezii upper teeth (modern)
Carcharhinus plumbeus upper teeth (modern)
Negaprion brevirostris upper teeth
Extant Japanese sturgeon ( Acipenser schrenckii )
Extant spotted gar ( Lepisosteus oculatus )
Extant Amia calva
Extant Alosa maeotica
Drawing of extant Ictalurus punctatus
Drawing of extant Merluccius merluccius
Extant Belona belona
Extant bandtail searobin ( Prionotus ophryas )
Extant Agonus cataphractus
Extant Lagodon rhomboides
Extant Stenotomus chrysops
Extant black drum
Extant Sciaenops ocellatus
Extant Tautoga onitis
Artists rendition of Astroscopus countermani
Extant school of Sphyraena barracuda
Extant Atlantic blue marlin
Thecachampsa sp. Vertebra possibly derived from this formation
Metaxytherium floridanum skeleton
Artists depiction of Aulophyseter
Messapicetus gregarius and M. longirostris skull diagrams
Fossilized Procamelus mummy from Oklahoma
Extant South American tapir ( Tapirus terrestris )
Skeleton and artists rendition of Neohipparion
Cranium of Cormohipparion occidentale