SS-35, Simpson Spring Mountains [Woods Hollow Fm] (Cambrian of the United States)

Where: Texas (30.0° N, 103.3° W: paleocoordinates 12.1° S, 101.2° W)

• coordinate based on political unit

When: Cedaria trilobite zone, Woods Hollow Boulders Formation, Marjumian (513.0 - 498.5 Ma)

• "Cedaria zone."

• member-level stratigraphic resolution

Environment/lithology: offshore shelf; green limestone and shale

• "ls. boulders in dark green shale. outer shelf (BA5)"
• Dark yellowish brown to moderate yellowish brown medium-grain mottled limestone, weathers with orange ferruginous spots and contains lenses of trilobite coquina.

Size class: macrofossils

Primary reference: J.L. Wilson. 1954. Late Cambrian and Early Ordovician Trilobites from the Marathon Uplift, Texas. Journal of Paleontology 28(3):249-285 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78737: authorized by Pete Wagner, entered by Pete Wagner on 15.02.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• "J.L.Wilson 1954. Late Camb. and early Ord. trilobites from the Marathon Uplift, Texas. J. Paleo 28:249-285."
 Aulacopleurida - Crepicephalidae
Coosella sp. Lochman 1936 trilobite
 Olenida - Cedariidae
 Acrotretida - Acrotretidae
Opisthotreta sp. Palmer 1954