Tecnocyrtina fauna, Gizzard Creek Mbr., Coralville Fmn., Glory Quarry (Devonian of the United States)

Where: Black Hawk County, Iowa (42.5° N, 92.3° W: paleocoordinates 33.3° S, 37.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Gizzard Creek Member (Coralville Formation), Late/Upper Givetian (388.1 - 383.7 Ma)

• Late Givetian, Strophodonta plicata Zone. This collection represents the lower 1.4 m.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; dolomite

• Said by author to be in transgressive part of cycle.
• Gizzard Creek Member is indicated on stratigraphic column as consisting of "fossiliferous dolomite".

Collection methods: Only brachiopods reported by name. Crinoids and stromatoporoids also present.

Primary reference: J. Day. 1988. The brachiopod succession of the Late Givetian-Frasnian of Iowa. In N. J. McMillan, A. F. Embry, and D. J. Glass (eds.), Devonian of the World, Volume III. Canadian Society of Petroleum Geologists. Calgary, Alberta, Canada 303-325 [M. Foote/M. Foote/M. Foote]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 35477: authorized by Michael Foote, entered by Michael Foote on 17.12.2003, edited by Alycia Stigall

Creative Commons license: CC BY (attribution)

Taxonomic list

Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
Rhynchonellata
 Athyridida - Athyrididae
 Spiriferinida - Cyrtinidae
 Atrypida - Atrypidae
"Independatrypa independensis" = Desquamatia (Independatrypa)
"Independatrypa independensis" = Desquamatia (Independatrypa)
Stromatoporoidea
 Stromatoporoidea -