UCMP V99851, San Gregorio section, Half Moon Bay (Miocene of the United States)

Where: San Mateo County, California (37.3° N, 122.4° W: paleocoordinates 36.9° N, 120.5° W)

• coordinate based on nearby landmark

When: Purisima Formation, Messinian (7.2 - 5.3 Ma)

• Powell et al 2007 suggest a Pliocene age

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified sandstone

• 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 117470: authorized by Mark Uhen, entered by Mark Uhen on 22.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Lamniformes - Lamnidae
Carcharodon sp. Smith 1838 white shark
 Hexanchiformes - Hexanchidae
cf. Hexanchus sp. Rafinesque 1810 sixgill shark
Mammalia
 Cetacea - Balaenopteridae
Balaenopteridae indet. Gray 1864 rorqual
cf. Balaenoptera sp. Lacépède 1804 rorqual
 Cetacea - Balaenidae
cf. Eubalaena "sp. 1" Gray 1864 right whale
 Cetacea - Phocoenidae
Phocoenidae indet. Gray 1825 porpoise
Species C of Barnes 1977