ammonites
Yangtzeconus priscus - Archaeospira ornata assemblage, Yangtze Gorge, Yichang (Cambrian of China)

Where: Hubei, China (30.7° N, 111.3° E: paleocoordinates 27.0° N, 160.4° E)

• coordinate based on political unit

• local area-level geographic resolution

When: Upper Member (Huangshandong Formation), Tommotian (530.0 - 520.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: lithified, gray, red, sandy, calcareous phosphorite

• light gray and red, calcareous and sandy phosphorites

Size class: macrofossils

Primary reference: W. Yü. 1979. Earliest Cambrian monoplacophorans and gastropods from western Hubei with their biostratigraphical significance. Acta Palaeontologica Sinica 18(3):233-270 [P. Wagner/P. Wagner/P. Wagner] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 56807: authorized by Pete Wagner, entered by Pete Wagner on 25.11.2005