Bromide Formation, Lower Echinoderm Zone (Ordovician of the United States)

Where: Oklahoma (34.0° N, 97.0° W: paleocoordinates 22.5° S, 73.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Lower Echinoderm zone, Mountain Lake Member (Bromide Formation), Blackriveran (457.3 - 449.6 Ma)

• Located in the middle of the Mountain Lake Member.

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; green shale and calcareous limestone

• Carbonate ramp with influx of clays. Environments from J. Sprinkle and M. W. Longman. 1982. Echinoderm paleoecology. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11: 68-75. Edited by J. Sprinkle.
• "[G]reen shale containing thin lenses or stringers of calcarenitic limestome made up mostly of bryozoan and echinoderm fragments."

Size class: macrofossils

Primary reference: J. Sprinkle. 1982. Echinoderm zones and faunas. In J. Sprinkle (ed.), Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 46-56 [S. Holland/T. Hanson/S. Bruning]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24102: authorized by Steven Holland, entered by Tori Hanson on 30.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Based on 6817 complete specimens and plates collected through November, 1977.
Show authors, comments, and common names
unclassified
  -
Camerate sp.
Camerate sp.
Camerate sp. A
Cyclocystoidea
  - Cyclocystoididae
Cyclocystoides sp.
Cyclocystoides sp. Salter and Billings 1858
Edrioasteroidea
  - Hemicystitidae
Foerstediscus sp.
Foerstediscus sp. Bassler 1935
 Edrioasterida -
Edriophus sp.
 Pentacystida - Steganoblastidae
Astrocystites sp.
Astrocystites sp. Whiteaves 1897
 Cyathocystida - Cyathocystidae
Cyathocystis sp.
Cyathocystis sp. Schmidt 1879
  - Pyrgocystidae
Pyrgocystis sp.
Pyrgocystis sp. Bather 1915
 Glyptosphaeritida - Eumorphocystidae
Eumorphocystis sp.
Crinoidea
 Diplobathrida - Rhodocrinitidae
Diabolocrinus arbucklensis, Archaeocrinus buckhornensis, Bromidocrinus sp., Bromidocrinus nodosus
Bromidocrinus sp. Kolata 1982 Sea lily
Bromidocrinus nodosus Kolata 1982 Sea lily
 Diplobathrida - Cleiocrinidae
Cleiocrinus bromidensis
 Camerata - Reteocrinidae
Reteocrinus depressus
 Inadunata - Metabolocrinidae
Eopinnacrinus sp.
Eopinnacrinus sp. Brower and Veinus 1982 Sea lily
 Dendrocrinida - Dendrocrinidae
Dendrocrinus sp.
Dendrocrinus sp. Hall 1852 Sea lily
 Porocrinida -
Carabocrinus sp., Palaeocrinus sp.
Carabocrinus sp. Billings 1857 Sea lily
Palaeocrinus sp. Billings 1859 Sea lily
 Hybocrinida - Hybocrinidae
Hybocrinus sp.
Hybocrinus sp. Billings 1857 Sea lily
 Homocrinida - Homocrinidae
Apodasmocrinus sp.
Apodasmocrinus sp. Warn and Strimple 1977 Sea lily
 Homocrinida - Cincinnaticrinidae
Doliocrinus sp.
Doliocrinus sp. Warn 1982 Sea lily
 Calceocrinida - Calceocrinidae
Paracremacrinus sp.
Paracremacrinus sp. Brower 1977 Sea lily
 Rhombifera -
Pirocystella sp.
 Rhombifera - Glyptocystitidae
Hesperocystis sp., Glyptocystella sp.
Hesperocystis sp. Sinclair 1945
Glyptocystella sp. Paul 1972
Paracrinoidea
 Platycystitida - Platycystitidae
Platycystites sp.
Platycystites sp. Miller 1889
 Platycystitida - Bistomiacystitidae
Bistomiacystis sp.
Asteroidea
 Hadrosida - Promopalaeasteridae
Promopalaeaster sp.
Promopalaeaster sp. Schuchert 1914 sea star
 Hadrosida - Hudsonasteridae
"Hudsonaster sp." = Hudsonaster, "Protopalaeaster sp." = Hudsonaster
"Hudsonaster sp." = Hudsonaster Stürtz 1899 sea star
"Protopalaeaster sp." = Hudsonaster Stürtz 1899 sea star
 Euaxosida - Palasterinidae
Petraster sp.
Petraster sp. Billings 1858 sea star