USGS M1027 - 2 kilometers southeast of Parker Ranch, east fork of Scott River (Silurian of the United States)

Where: Siskiyou County, California (41.4° N, 122.1° W: paleocoordinates 7.2° S, 66.4° W)

• outcrop-level geographic resolution

When: Gazelle Formation, Ludfordian (425.6 - 423.0 Ma)

• formation-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Preservation: original silica

Primary reference: R. D. Hoare. 2000. Silurian Polyplacophora and Rostroconchia (Mollusca) from Northern California. Proceedings of the California Academy of Sciences 52(3):23-31 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157204: authorized by Pete Wagner, entered by Pete Wagner on 07.06.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

 Conocardiida - Bransoniidae
Eusphairica distubula n. gen. n. sp.
Eusphairica distubula n. gen. n. sp. Hoare 2000
 Paleoloricata -
Thairoplax merriami n. sp. Hoare 2000 chiton
 Paleoloricata - Gotlandochitonidae
Paleochiton siskiyouensis n. sp. Hoare 2000 chiton