USGS Mesozoic M8525, Loma Prieta road (Cretaceous of the United States)

Also known as 88-E-2

Where: Santa Clara County, California (37.1° N, 121.9° W: paleocoordinates 43.3° N, 91.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Late/Upper Campanian (83.5 - 70.6 Ma)

• Age is poorly constrained but indicative of Late Campanian. Taxa have type locality near at Texas Flat, near Folsom, which belongs to Upper Campanian based on Baculites inornatus and B. occidentalis. Spondylus subnodosus has its type locality in the Santa Ana Mountains in Upper Campanian Metaplacenticeras pacificum zone. Baculitids found are only known from Late Campanian.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified siliciclastic sediments

Size class: macrofossils

Collected by W.P. Elder in 1988; reposited in the USNM

Primary reference: W. P. Elder. 1991. An unusual Late Cretaceous fauna from an oyster-rich interval in the Santa Cruz Mountains of California. United States Geological Survey Bulletin 1934:E1-E18 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 167698: authorized by Matthew Clapham, entered by Matthew Clapham on 29.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Demospongiae
 Clavulina - Clionaidae
Entobia sp. Bronn 1838 demosponge
Anthozoa
 Scleractinia - Rhizangiidae
"Astrangiidae indet." = Rhizangiidae
"Astrangiidae indet." = Rhizangiidae d'Orbigny 1851 stony coral
Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
Crinoidea
 Isocrinida - Isocrinidae
Isocrinus sp. von Meyer 1836 Sea lily
Malacostraca
 Decapoda - Callianassidae
? Callianassa sp. Leach 1814 decapod
Gymnolaemata
 Cheilostomata -
Stenolaemata
 Cyclostomata -
Bivalvia
 Ostreiformii -
Pectinida indet. Gray 1854 scallop
 Pectinida - Pectinoidae
Spondylus subnodosus Packard 1922 scallop
Lyriochlamys traskii Gabb 1864 scallop
 Pectinida - Limidae
Lima "sp. A" Bruguière 1797 file clam
Acesta "sp. A" Adams and Adams 1858 file clam
 Ostreida - Gryphaeidae
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Ostreida - Malleidae
Isognomon sp. Lightfoot 1786 oyster
 Myalinida - Inoceramidae
 Arcida - Glycymerididae
 Arcida - Arcidae
Barbatia sp. Gray 1842 clam
 Arcida - Parallelodontidae
"? Indogrammatodon sp." = Grammatodon (Indogrammatodon)
"? Indogrammatodon sp." = Grammatodon (Indogrammatodon) Cox 1937 clam
 Trigoniida - Steinmanellidae
Yaadia sp. Crickmay 1930 clam
 Cardiida - Mactridae
 Carditida - Crassatellidae
Crassatella sp. Lamarck 1799 clam
 Ichnofossils -
Rogerella sp. Saint-Seine 1951