Bird Hill (Guber) (Devonian of the United States)

Where: Iowa (42.0° N, 93.5° W: paleocoordinates 29.9° S, 38.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Cerro Gordo Member (Lime Creek Formation), Frasnian (382.7 - 372.2 Ma)

• from the upper part of the member ("Strophonella Faunule")

• group of beds-level stratigraphic resolution

Environment/lithology: marine; argillaceous shale

• paleoenvironment not discussed

Collection methods: field collection of Ager's assistant Guber

Primary reference: P. Wallace. 1978. Homeomorphy between Devonian brachiopod communities in France and Iowa. Lethaia 11:259-272 [J. Alroy/J. Alroy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 3406: authorized by John Alroy, entered by John Alroy on 31.07.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

• total number of specimens 248
unclassified
  -
Crinoidea
  -
Crinoidea indet. Miller 1821 Sea lily
0.8%: "crinoid fragments"
Strophomenata
 Productida - Monticuliferidae
 Strophomenida - Strophodontidae
"Strophodonta thomasi" = Strophomena (Strophodonta)
"Strophodonta thomasi" = Strophomena (Strophodonta)
0.4%: originally entered as "Stropheodonta thomasi"
 Strophomenida - Strophonellidae
Strophonella sp. Hall 1879
6.8%
 Strophomenida - Douvillinidae
Douvillina arcuata Hall 1858
20.1%
Rhynchonellata
 Spiriferida - Theodossiidae
 Spiriferida - Cyrtospiriferidae
 Atrypida - Atrypidae
"Pseudatrypa devoniana" = Pseudoatrypa devoniana Webster 1921
0.4%
 Orthida - Schizophoriidae
"Schizophoria iowaensis" = Schizophoria (Schizophoria) iowensis
"Schizophoria iowaensis" = Schizophoria (Schizophoria) iowensis Hall 1858
11.7%
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
3.2%: "stick bryozoans"
Bivalvia
 Cardiidia - Grammysiidae
Grammysia sp. de Verneuil 1847 clam
0.4%
 Lucinida - Mactromyidae
Anthozoa
 Stauriida - Zaphrentidae
Heliophyllum solidum Hall and Whitfield 1873 horn coral
8.1%