USNM 18144. Gregg Ranch barnyard, northern of 2 buildings on 20-21 boundary (Ordovician of the United States)

Where: Siskyou County, California (41.4° N, 122.7° W: paleocoordinates 1.1° S, 76.8° W)

• local area-level geographic resolution

When: Kangaroo Creek Formation, Caradoc (458.4 - 449.5 Ma)

• Clasts of Caradocian age given other indicators

• bed-level stratigraphic resolution

Environment/lithology: lithified limestone

• limestone lens

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, hydrochloric

Primary reference: D. M. Rohr. 1980. Ordovician - Devonian Gastropoda from the Klamath Mountains, California. Palaeontographica Abteilung A 171:141-199 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69240: authorized by Pete Wagner, entered by Pete Wagner on 21.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Murchisoniina - Trochonematidae
? Trochonemella mikulici n. sp.
? Trochonemella mikulici n. sp. Rohr 1980 snail