Taylorsville [Mormon Sandstone] (Jurassic of the United States)

Where: Plumas County, California (40.1° N, 120.8° W: paleocoordinates 33.5° N, 60.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Mormon Formation, Bajocian (170.3 - 168.3 Ma)

• LITHOSTRATIGRAPHY: From Mormon Sandstone in text; assigned to Mormon, following less antiquated references. AGE: early Middle Jurassic in text; assigned to Bajocian following less antiquated references.

Environment/lithology: marine; sandstone

• LITHOLOGY: not reported, but presumably a sandstone. LITHIFICATION: not reported.

Size class: macrofossils

Collection methods: surface (float), surface (in situ),

• COLLECTORS: unknown. REPOSITORY: unknown, but formally of Johns Hopkins University.

Primary reference: U. S. Grant and L. G. Hertlein. 1938. The West American Cenozoic Echinoidea. Publications of the University of California at Los Angeles in Mathematical and Physical Sciences 2:1-225 [L. Villier/L. Villier]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 156330: authorized by Austin Hendy, entered by Austin Hendy on 18.05.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to echinodermata mentioned in text. NOMENCLATURE: Antiquated nomenclature, but with species-level identifications.
Echinoidea
 Cidaroida - Cidaridae
Cidaris californicus Clark 1893 pencil urchin
 Stomopneustoida - Stomechinidae
Stomechinus hyatti Clark 1893 sea urchin
 Euechinoidea - Pseudodiadematidae
Pseudodiadema emersoni Clark 1893 sea urchin
 Euechinoidea - Hemicidaridae
Hemicidaris intumescens Clark 1893 sea urchin