USNM J-18, Hill 5300 (Permian of the United States)

Where: Texas (30.3° N, 103.3° W: paleocoordinates 0.8° S, 34.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Lenox Hills Formation, Artinskian (290.1 - 279.3 Ma)

• Stated to be "Wolfcamp or Leonard Formation" but geographic location suggests that the Lenox Hills Formation is most likely

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, cherty/siliceous limestone

Size classes: mesofossils, microfossils

Preservation: mold/impression, replaced with silica

Collected by G.A. Cooper in 18, 1950

Primary reference: I. G. Sohn. 1954. Ostracoda from the Permian of the Glass Mountains, Texas. United States Geological Survey Professional Paper 264-A:1-24 [M. Clapham/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117948: authorized by Matthew Clapham, entered by Matthew Clapham on 29.09.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Leperditellocopida - Scrobiculidae
Roundyella dorsopapillosa Sohn 1954 ostracod
 Podocopida - Bairdiidae
Bairdia pruniseminata Sohn 1954 ostracod
 Platycopida - Miltonellidae
Miltonella shupei Sohn 1950 ostracod
Sanniolus sigmoides Sohn 1954 ostracod
 Palaeocopida - Amphissitidae
Amphissites cf. centronotus Ulrich and Bassler 1906 ostracod
 Palaeocopida - Kellettinidae
Kindlella centrinoda Sohn 1954 ostracod
Kellettina vidriensis Hamilton 1942 ostracod
 Palaeocopida - Knightinidae
? Knightina macknighti Sohn 1954 ostracod