Eucalyptocrinites ornatus-Carbonate Mound Comm., Racine and Wabash Formations (Silurian to of the United States)

Where: Illinois (42.0° N, 88.0° W: paleocoordinates 25.1° S, 50.8° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Wenlock to Wenlock (433.4 - 423.0 Ma)

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

• Crinods generally lack stem and arms. Deposits often debris wedges on flanks of large carbonate mud mound cores. "This is a BA 3 fauna that evidently was subject to occasional disturbance, i.e., below fair weather wave base but not storm wave base, and not subject to regular current winnowing."
• "generally a porous, noncherty (except near transition to intermound facies), inclined-bedded, occasionally pyritic crinoid moldic or crinoid replaced dolopackstone: similar dolograinstones present occasionally"

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 26705: authorized by Michael Foote, entered by Michael Foote on 24.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhombifera
 Hemicosmitoida - Caryocrinitidae
Caryocrinites sp.
Crinoidea
 Monobathrida - Periechocrinidae
Periechocrinus sp.
Periechocrinus sp. Morris 1843 Sea lily
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinitidae indet., Eucalyptocrinites ornatus
Eucalyptocrinitidae indet. Roemer 1855 Sea lily
 Diplobathrida - Dimerocrinitidae
Dimerocrinites sp.
Dimerocrinites sp. Phillips 1839 Sea lily
 Diplobathrida - Lampterocrinidae
Siphonocrinus nobilis
 Flexibilia -
Icthyocrinus sp.
Icthyocrinus sp. Conrad 1842 Sea lily
Trilobita
 Corynexochida - Illaenidae
"Bumastus" sp.
"Bumastus" sp. Murchison 1839 trilobite
"bumastids"
 Lichida - Lichidae
Arctinurus sp.
Arctinurus sp. Castelnau 1843 trilobite
Cephalopoda
 Nautiloidea -
Nautiloidea indet.
Nautiloidea indet. Agassiz 1847 nautiloid
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
Craniata
 Trimerellida - Trimerellidae
Dinobolus sp.
Dinobolus sp. Hall 1871
Strophomenata
 Strophomenida - Rafinesquinidae
Leptaena sp.
Leptaena sp. Dalman 1828
Rhynchonellata
 Orthida -
Orthida indet.
Orthida indet. Schuchert and Cooper 1932
 Spiriferida - Cyrtiidae
Eospirifer sp.
Eospirifer sp. Schuchert 1913
 Pentamerida -
Pentamerida indet.
Pentamerida indet. Schuchert and Cooper 1931
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
Anthozoa
 Tabulata -
Tabulata indet.
Tabulata indet. tabulate coral
 Favositida - Favositidae
Favosites sp.
Favosites sp. Lamarck 1816 tabulate coral
 Rugosa -
Rugosa indet.
Rugosa indet. horn coral