Threadgill Creek (TC) -04 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

• local area-level geographic resolution

When: Idahoia trilobite zone, Morgan Creek Limestone Member (Wilberns Formation), Sunwaptan (493.5 - 487.5 Ma)

• group of beds-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 81095: authorized by Wolfgang Kiessling, entered by Uta Merkel on 04.06.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Demospongiae
 Lithistida - Streptosolenidae
Wilbernicyathus donegani
Epiphyton
  - Ludloviaceae
Epiphyton sp.
Epiphyton sp. Bornemann 1886
Chabakoviacea
  - Chabakoviacea
Tarthinia sp.
Tarthinia sp. Drozdova 1980
Renalcis
  - Chabakoviacea
Renalcis sp.
Renalcis sp. Vologdin 1932
Hormogoneae
 Oscillatoriales - Girvanellaceae
Girvanella sp.
Girvanella sp. Nicholson and Etheridge 1878