USGS Mesozoic M8524, Loma Prieta road (Cretaceous of the United States)

Also known as 88-E_1

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 167705: authorized by Matthew Clapham, entered by Matthew Clapham on 29.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
 Isocrinida - Isocrinidae
Isocrinus sp. von Meyer 1836 Sea lily
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Bivalvia
 Arcida - Parallelodontidae
 Arcida - Glycymerididae
 Pectinida - Limidae
Lima "sp. A" Bruguière 1797 file clam
 Cardiida - Tellinidae
? Tellina sp. Linnaeus 1758 tellin clam
 Cardiida - Veneridae
Calva sp. Popenoe 1937 venus clam
 Trigoniida - Megatrigonioidae
Pterotrigonia evansana Meek 1864 clam
 Nuculida - Nuculidae
Acila (Truncacila) cf. demessa Finlay 1927 divaricate nutclam
Gastropoda
 Heterostropha - Ringiculidae
Biplica cf. obliqua Gabb 1864 snail