Threadgill Creek (TC) - 20 m (Cambrian of the United States)

Also known as Reef 1755. Llano area, sponge-microbial reefs

Where: Texas (30.5° N, 99.1° W: paleocoordinates 18.0° S, 95.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Idahoia trilobite zone, Point Peak Member (Wilberns Formation), Sunwaptan (493.5 - 487.5 Ma)

• Point Peak Member overlies Morgan Creek Member.

• bed-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified reef rocks

• abundant meter-scale obconical, flat-topped sponge-bearing reefs, lower complex: calcimicrobial phase with sponges, upper complex: mesostromatolite phase without sponges

Size class: macrofossils

Collection methods: peel or thin section,

Primary reference: R. A. Johns, B. F. Dattilo, and B. Spincer. 2007. Neotype and redescription of the Upper Cambrian anthaspidellid sponge, Wilbernicyathus donegani Wilson, 1950. Journal of Paleontology 81(3):435-444 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 194786: authorized by Pete Wagner, entered by Pete Wagner on 29.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Demospongiae
 Lithistida - Streptosolenidae
Wilbernicyathus donegani