USGS M5054, Laguna Creek (Miocene to of the United States)

Where: Santa Cruz County, California (37.0° N, 122.1° W: paleocoordinates 36.3° N, 117.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Monterey Formation, Langhian to Langhian (16.0 - 11.6 Ma)

• Succession of organic mudstone beds of lare Relizian and Luisian (middle Miocene) age that are conformable above the Lompico Sandstone. Up to 600 m thick.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, dolomitic, gray, cherty/siliceous mudstone and siltstone

• A transgressive sandstone unit.
• Medium- to thick-bedded and laminated olive-gray subsiliceous organic mudstone and sandy siltstone with few dolomite interbeds.

Size class: macrofossils

Reposited in the UMMP

Collection methods: quarrying,

• Also collections at USGS, Menlo Park

Primary reference: J. C. Clark. 1981. Stratigraphy, paleontology, and geology of the Central Santa Cruz Mountains, California Coast Ranges. United States Geological Survey Professional Paper 1168:1-51 [A. Miller/A. Hendy/R. McClees-Funinan]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 37532: authorized by Austin Hendy, entered by Austin Hendy on 16.03.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Representative for molluscan, echinoid and cirriped taxa; does not include mentioned foraminifera
Bivalvia
 Pectinida - Pectinoidae
Pecten sp., "Amusium lompocensis" = Amussium lompocensis
Pecten sp. Müller 1776 scallop
"Amusium lompocensis" = Amussium lompocensis Arnold 1907 scallop
 Cardiida - Veneridae
Gastropoda
 Sorbeoconcha - Turritellidae
Turritella sp. n. sp. Lamarck 1799 turret shell