UCMP V99836, San Gregorio section, Half Moon Bay (Pliocene of the United States)

Where: San Mateo County, California (37.3° N, 122.4° W: paleocoordinates 37.0° 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 184962: authorized by Matthew Clapham, entered by Matthew Clapham on 01.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
 Carchariniformes - Sphyrnidae
cf. Sphyrna sp. Rafinesque 1810 hammerhead shark
Mammalia
 Cetacea - Balaenopteridae
Balaenopteridae indet. Gray 1864 rorqual
 Cetacea - Cetotheriidae
Herpetocetus sp. Van Beneden 1872 whale
 Cetacea -
cf. Physeteroidea indet. Gray 1868 toothed whale