UCMP V99833, San Gregorio section, Half Moon Bay (Pliocene of the United States)

Where: San Mateo County, California (37.3° N, 122.4° W: paleocoordinates 37.1° N, 121.2° W)

• coordinate based on nearby landmark

When: Purisima Formation, Zanclean (5.3 - 3.6 Ma)

• Uppermost Zanclean on stratigraphic column, below 3.3-3.4 ma ash bed

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; sandstone and siltstone

• strong influence of physical processes (waves, etc.)

Size class: macrofossils

Reposited in the UCMP

Primary reference: R. W. Boessenecker. 2011. A new marine vertebrate assemblage from the Late Neogene Purisima Formation in Central California, Part I: Fossil sharks, bony fish, birds, and implications for the age of the Purisimia Formation west of the San Gregorio Fault. PalArch's Journal of Vertebrate Palaeontology 8(4):1-30 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 117471: authorized by Mark Uhen, entered by Mark Uhen on 22.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rajiformes - Rajidae
"Raja cf. binoculata" = Beringraja binoculata
"Raja cf. binoculata" = Beringraja binoculata Girard 1855 skate
 Lamniformes - Cetorhinidae
Cetorhinus maximus Gunner 1765 basking shark
 Lamniformes - Lamnidae
Carcharodon carcharias Linnaeus 1758 great white shark
 Charadriiformes - Panalcidae
Mancalla diegensis Miller 1937 auk
 Carnivora - Otariidae
Callorhinus cf. gilmorei Berta and Deméré 1986 fur seal
 Cetacea - Delphinidae
cf. Globicephalinae indet. Gray 1866 dolphin
 Cetacea - Phocoenidae
cf. Phocoena sp. Cuvier 1816 porpoise