USGS 3179, Myrick's Apiary, Frio River (Paleocene of the United States)

Where: Uvalde County, Texas (29.2° N, 99.6° W: paleocoordinates 34.5° N, 80.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Kincaid Formation (Midway Group), Danian (66.0 - 61.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Kincaid Fm, Midway Group. AGE: Danian. STRATIGRAPHIC POSITION: Nautilids come from basal 2 feet of the Kincaid, according to Gardner (1933).

• group of beds-level stratigraphic resolution

Environment/lithology: shoreface; lithified, glauconitic, pebbly, conglomeratic sandstone

• ENVIRONMENT: According to Roy (1984): "The siltstone at the head of the Rio Grande Embayment is interpreted to have been deposited in a shoreface environment. Grain size increases upward in the section with a concurrent decrease in clay content. Numerous scour channels indicate deposition at or near wavebase in a nearshore environment. Paleontological evidence, particularly the change in burrows, suggests an environmental change that would occur from the transition from offshore to nearshore." The basal conglomeratic sandstone is consistent with a shoreface at the beginning of transgression.
• SPECIFIC LITHOLOGY: Basal conglomerate forming a discontinuous series of boulders, abundantly glauconitic and very hard and pebbly. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the USNM

Collection methods: surface (in situ),

• COLLECTOR: Possibly T. Wayland Vaughan. REPOSITORY: USNM.

Primary reference: J. Gardner. 1923. New species of Mollusca from the Eocene deposits of southwestern Texas. United States Geological Survey Professional Paper 131:109-117 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 165997: authorized by Matthew Clapham, entered by Matthew Clapham on 01.02.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to Nautiloidea described in primary publication. NOMENCLATURE: Authoritative publication with modern nomenclature and species-resolution identifications.
Show authors, comments, and common names
Cephalopoda
 Nautilida - Hercoglossidae
"Enclimatoceras vaughani" = Cimomia vaughani
"Enclimatoceras vaughani" = Cimomia vaughani Gardner 1923 nautiloid