John Barr's Tunnel (Cretaceous of the United States)

Also known as Black Hills

Where: Wyoming (44.7° N, 104.2° W: paleocoordinates 43.0° N, 59.9° W)

• coordinate based on nearby landmark

When: Cretaceous Formation, Cretaceous (145.0 - 66.0 Ma)

• Due to the 19th century date of publication, the "Cretaceous Formation" is the highest stratigraphic resolution for this collection.

• formation-level stratigraphic resolution

Environment/lithology: fluvial-lacustrine

• "Gray shales with plants."

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression, original carbon

Collection methods: bulk,

Primary reference: L.F. Ward. 1899. The Cretaceous formation of the Black Hills as as indicated by the fossil plants. Cretaceous Formation of the Black Hills [B. Tiffney/J. Fosdick/B. Tiffney]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 32046: authorized by Bruce Tiffney, entered by Julia Fosdick on 02.06.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Equisetopsida
 Pinidae - Pinidae
Araucarites cuneatus n. sp. Ward 1899
 Bennettitales -
Angiospermae
  -
Carpolithus barrensis n. sp. Ward 1899