Bromide Formation, Mountain Lake Member (Lower Zone), Oklahoma (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: Mountain Lake Member (Bromide Formation), Blackriveran (457.3 - 449.6 Ma)

• Mountain Lake Member, Lower Zone

• member-level stratigraphic resolution

Environment/lithology: marine; gray sandstone and gray shale

• Upper and lower shoreface; transition zone; shallow lagoonal; shallow shelf or carbonate ramp. Environments from M. W. Longman. 1982. Depositional environments. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 : 17-29. Edited by J. Sprinkle.
• "[B]asal tan to greenish-gray fine-grained quartz arenite sandstone, with well-rounded and frosted grains, overlain by a sandstone and greenish-gray illitic-chloritic shale above. The sandstone sequence is thickest (more than 37 m) along Lick Creek in the northwestern Arbuckles and thinnest (less than 9 m) in the eastern Arbuckles, losing sand at the top of the section. The overlying shale and limestone is thickest (more than 60 m) along the axis of aulacogen and is mostly shale. In a comparable section in the northeastern Arbuckles, limestone predominates with some sand, and the section is 24 to 31 m thick." Lithology from R, O. Fay and A. A. Graffman. 1982. Stratigraphic studies. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 : 11-16. Edited by J. Sprinkle.

Size class: macrofossils

Primary reference: R. O. Fay, A. A. Graffham, and J. Sprinkle. 1982. Previous studies of Bromide echinoderms. In J. Sprinkle (ed.), Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 34-44 [S. Holland/T. Hanson/S. Bruning]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 23990: authorized by Steven Holland, entered by Tori Hanson on 25.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Stratigraphic positions of Bromide echinoderms as used by authors from 1903-1980.
Show authors, comments, and common names
 Glyptosphaeritida - Eumorphocystidae
"Eumorphocystis multiporata" = Eumorphocystis multiporata, "Strimplecystis oklahomensis" = Eumorphocystis multiporata
"Eumorphocystis multiporata" = Eumorphocystis multiporata Branson and Peck 1940
"Strimplecystis oklahomensis" = Eumorphocystis multiporata Branson and Peck 1940
Eocrinoidea
  - Palaeocystitidae
? Palaeocystites sp.
? Palaeocystites sp.
may be Carabocrinus
Crinoidea
 Diplobathrida - Cleiocrinidae
Cleiocrinus regius
Cleiocrinus regius Billings 1857 Sea lily
 Diplobathrida - Rhodocrinitidae
Archaeocrinus spp., Archaeocrinus cf. lacunosus
Archaeocrinus spp. Wachsmuth and Springer 1881 Sea lily
some species may not be Archaeocrinus
Archaeocrinus cf. lacunosus Billings 1857 Sea lily
 Monobathrida - Glyptocrinidae
Periglyptocrinus priscus
Periglyptocrinus priscus Billings 1857 Sea lily
 Hybocrinida - Hybocrinidae
Hybocrinus pyxidatus, Hybocrinus nitidus
Hybocrinus nitidus Sinclair 1945 Sea lily
 Porocrinida -
Carabocrinus sp., Carabocrinus treadwelli, Carabocrinus tumidus, Carabocrinus cf. vancortlandi, Carabocrinus loeblichi, Carabocrinus logani, Palaeocrinus hudsoni
Carabocrinus sp. Billings 1857 Sea lily
 Dendrocrinida - Dendrocrinidae
Dendrocrinus cf. latibranchiatus
 Homocrinida - Homocrinidae
Ectenocrinus sp., Apodasmocrinus daubei
Ectenocrinus sp. Miller 1889 Sea lily
 Calceocrinida - Calceocrinidae
Paracremacrinus laticardinalis
 Rhombifera - Echinosphaeritidae
Echinosphaerites aurantium
 Rhombifera - Glyptocystitidae
Glyptocystites sp. n. sp., "Glyptocystites multiporus" = Glyptocystites multipora, "Glyptocystites forbesi" = Glyptocystis forbesi, Glyptocystites cf. regnelli, Glyptocystella loeblichae, Glyptocystella sp., Hesperocystis deckeri
Glyptocystites sp. n. sp. Billings 1854
"Glyptocystites multiporus" = Glyptocystites multipora Billings 1854
"Glyptocystites forbesi" = Glyptocystis forbesi Billings 1857
Glyptocystella sp. Paul 1972
Hesperocystis deckeri Sinclair 1945
 Rhombifera - Cheirocrinidae
"Glyptocystites logani" = Cheirocrinus logani, Cheirocystis ardmorensis
"Glyptocystites logani" = Cheirocrinus logani Billings 1857
 Rhombifera - Callocystitidae
"Lepadocystites ? moorei" = Lepadocystis moorei
"Lepadocystites ? moorei" = Lepadocystis moorei Meek 1871
Paracrinoidea
 Comarocystitida - Amygdalocystitidae
Amygdalocystites cf. florealis
 Platycystitida - Platycystitidae
Platycystites sp. n. sp., Platycystites bassleri, Platycystites cf. bassleri, Platycystites levatus, Platycystites cf. levatus, "Globulocystites cristatus" = Platycystites cristatus, "Platycystites bromidensis" = Platycystites cristatus, "Platycystites cf. bromidensis" = Platycystites cristatus, "Platycystites fimbriatus" = Platycystites cristatus
Platycystites sp. n. sp. Miller 1889
Platycystites levatus Bassler 1943
"Globulocystites cristatus" = Platycystites cristatus Bassler 1943
"Platycystites bromidensis" = Platycystites cristatus Bassler 1943
"Platycystites cf. bromidensis" = Platycystites cristatus Bassler 1943
"Platycystites fimbriatus" = Platycystites cristatus Bassler 1943
Edrioasteroidea
 Cyathocystida - Cyathocystidae
Cyathocystis oklahomae