Carpocrinus bodei Assoc., Farmers Creek Member, Hopkinton Fm., Eastern Iowa (Silurian of the United States)

Where: Iowa (42.5° N, 91.5° W)

• Paleocoordinates: 26.1° S, 106.3° W (Wright 2013)

• coordinate estimated from map

• local area-level geographic resolution

When: Farmers Creek Member (Hopkinton Formation), Llandovery (443.4 - 433.4 Ma)

• upper portion of F.C. Member. Late Llandovery (C4).

• member-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; dolomitic, shelly/skeletal wackestone and dolomitic, shelly/skeletal packstone

• "camerate calices the most common large fossil...crinoids preserved as intact calices..and as disarticulated debris...winnowed debris more frequent than in lower F.C. communities...brachiopods and other shelly biota less common and more frequently diarticulated...within shallow to deep BA 3..."
• "Moderately fossiliferous...The matrix is a dense very fine grained fossil-moldic, relatively nonporous dolowackestone; packstone fabrics are seldom encountered."

Collection methods: Echinoderm abundances given in table 45.23.

Primary reference: T. J. Frest, C. E. Brett, and B. J. Witzke. 1999. Caradocian-Gedinnian echinoderm associations of Central and Eastern North America. Paleocommunities--a case study from the Silurian and Lower Devonian 638-783 [M. Foote/K. Koverman/P. Wagner]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 26713: authorized by Michael Foote, entered by Michael Foote on 25.10.2002

Creative Commons license: CC0 (CC0)

Taxonomic list

 Glyptosphaeritida - Gomphocystitidae
Crinoidea
 Monobathrida - Patelliocrinidae
 Monobathrida - Carpocrinidae
 Diplobathrida - Dimerocrinitidae
Rhynchonellata
 Orthida - Platystrophiidae
"Platystrophia biforata" = Platystrophia biforatus
"Platystrophia biforata" = Platystrophia biforatus Schlotheim 1820
 Atrypida - Atrypidae
Atrypa reticularis Linnaeus 1758
 Pentamerida - Pentameridae
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena rhomboidalis Wahlenberg 1818