Lander, Fremont Co. (lower sandstone) - [Frontier Fm] (Cretaceous of the United States)

Where: Fremont County, Wyoming (42.8° N, 108.7° W: paleocoordinates 46.6° N, 73.0° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Scaphites ventricosus ammonoid zone, Frontier Formation, Middle Coniacian (89.3 - 85.8 Ma)

• STRATIGRAPHIC RELATIONS: From the Frontier Fm. AGE: Coniacian, on the basis of antiquated ammonite biostratigraphy. STRATIGRAPHIC POSITION: From lowest sandstone in section.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified sandstone

• SPECIFIC LITHOLOGY: Sandstone. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collection methods: surface (in situ),

• COLLECTORS: Unknown. REPOSITORY: USNM.

Primary reference: J. B. Reeside. 1932. The Upper Cretaceous ammonite genus Barroisiceras in the United States. United States Geological Survey Professional Paper 170(B):9-21 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 88542: authorized by Austin Hendy, entered by Austin Hendy on 14.04.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to Barroisiceras described in publication. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications.
Show authors, comments, and common names
Bivalvia
 Myalinida - Inoceramidae
Inoceramus aff. fragilis
Inoceramus aff. fragilis Hall and Meek 1856 clam
Cephalopoda
 Ammonitida - Scaphitidae
Scaphites ventricosus
Scaphites ventricosus Meek and Hayden 1862 ammonite
 Ammonitida - Collignoniceratidae
"Barroisiceras (Forresteria) stantoni" = Forresteria stantoni
"Barroisiceras (Forresteria) stantoni" = Forresteria stantoni Reeside 1932 ammonite