Eucalyptocrinites sp. cf. E. ornatus Association of the Scotch Grove (Silurian to of the United States)

Where: Iowa (42.2° N, 91.1° W: paleocoordinates 21.2° S, 55.5° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Welton Member (Scotch Grove Formation), Llandovery to Llandovery (443.4 - 427.4 Ma)

• member-level stratigraphic resolution

Environment/lithology: deep subtidal ramp; lithified, dolomitic wackestone

• SEP: "..presense of complete echinoderm crowns...suggests a relatively quiet normal marine environment below normal wave base and perhaps only rarely distrurbed by storms."

•

•SEP environmental call based on given description and p. 807 in same reference.

• The lithology is a level-bedded porous noncherty skeletal-moldic dolowackestone.

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 13356: authorized by Michael Foote, entered by Kimberly Koverman on 04.03.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Callocrinus longispinus
Rhombifera
 Hemicosmitoida - Caryocrinitidae
Caryocrinites sp.
Caryocrinites sp. Say 1825
Caryocrinites sp. B. Witzke, 1976
Blastoidea
  -
Lysocystites nodosus
 Coronata - Stephanocrinidae
Cupulocorona spp.
Cupulocorona spp. Donovan and Paul 1985 blastoid
Cupulocorona sp. 1 and sp. 2
Crinoidea
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinites cf. ornatus
 Diplobathrida - Lampterocrinidae
Siphonocrinus nobilis
 Flexibilia -
Icthyocrinus sp.
Icthyocrinus sp. Conrad 1842 Sea lily