UCMP V99847, 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, 121.5° W)

• coordinate based on nearby landmark

When: Purisima Formation, Piacenzian (3.6 - 2.6 Ma)

• Lower Piacenzian, above volcanic ash with 3.3-3.4 Ma tephrochronology age

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 117472: authorized by Mark Uhen, entered by Mark Uhen on 22.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Rajiformes - Rajidae
"Raja cf. binoculata" = Beringraja binoculata
"Raja cf. binoculata" = Beringraja binoculata Girard 1855 skate
 Pristiophoriformes - Pristiophoridae
Pristiophorus sp. Bleeker 1859 saw shark
Mammalia
 Cetacea - Phocoenidae
Phocoenidae indet. Gray 1825 porpoise