Apopentamerus community, Racine Fm, 34642 - Patzkowsky (Silurian of the United States)

Where: Milwaukee County, Wisconsin (43.0° N, 87.9° W: paleocoordinates 23.6° S, 50.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Racine Formation, Wenlock (433.4 - 427.4 Ma)

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

• "Bank deposits formed in proximity to reefs."
• 25 cm thick bed of packstone.

Size class: macrofossils

Primary reference: R. Watkins. 1994. Evolution of Silurian Pentamerid Communities in Wisconsin. Palaios 9:488-499 [M. Patzkowsky/Z. Krug]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 13001: authorized by Mark Patzkowsky, entered by Zack Krug on 15.01.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
"stromatoporoid" sp., "Favositid" indet., "Heliolitid" sp. 2, "Pachyporid" indet.
Cephalopoda
 Orthocerida - Dawsonoceratidae
Dawsonoceras nodocostatum
Rhynchonellata
 Orthida - Rhipidomellidae
Dalejina sp.
Dalejina sp. Havlicek 1953
 Atrypida - Atrypidae
Atrypa sp.
Atrypa sp. Dalman 1828
 Pentamerida - Pentameridae
"Apopentamerus racinensis" = Harpidium (Isovella)
"Apopentamerus racinensis" = Harpidium (Isovella)
 Pentamerida - Parastrophinidae
Anastrophia internascens
Strophomenata
 Strophomenida - Strophodontidae
"Protomegastrophia profunda" = Brachyprion (Protomegastrophia) profunda
"Protomegastrophia profunda" = Brachyprion (Protomegastrophia) profunda Hall 1852
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
laminar
Actinopteri
 Acanthomorphata - Howellidae
Howella sp.
Howella sp. Ogilby 1899
Anthozoa
 Stauriida - Zaphrentidae
"Zaphrentis racinensis" = Zaphrenthis
"Zaphrentis racinensis" = Zaphrenthis horn coral
 Stauriida - Cyathaxoniidae
Cyathaxonia wisconsinensis