UCMP V99834, 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 184960: authorized by Matthew Clapham, entered by Matthew Clapham on 01.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Rajiformes - Rajidae
"Raja cf. binoculata" = Beringraja binoculata
"Raja cf. binoculata" = Beringraja binoculata Girard 1855 skate
 Lamniformes - Lamnidae
Carcharodon carcharias Linnaeus 1758 great white shark
 Carnivora - Odobenidae
Dusignathus cf. seftoni Deméré 1994 walrus
 Cetacea - Balaenopteridae
Balaenopteridae indet. Gray 1864 rorqual