Bromide Formation, Mountain Lake Member Ostracods: Blackriveran, Oklahoma
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Eoprimitia bailyana
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Eoprimitia cooperi
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Eoprimitia quadrata
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? Eoprimitia subnodosa
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Rayella calvini
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? Rayella parva
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| Rayella calvini parva | ||||||||||
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Tetradellina henningsmoeni
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Thomasatina bromidensis
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Thomasatina simplex
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Winchellatina cornuta
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Winchellatina longispina
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Ostracoda
- Podocopida
- Bythocyprididae
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Bythocypris spinosa
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Bythocypris cylindrica
(Hall 1871)
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| recombined as Phelobythocypris cylindrica | ||||||||||
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Ostracoda
- Podocopida
- Bairdiidae
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Krausella arcuata
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Ostracoda
- Podocopida
- Beecherellidae
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Platyrhomboides quadratus
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Ostracoda
- Podocopida
- Balticellidae
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Monoceratella brevispinata
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Balticella deckeri
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Balticella elongata
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| Balticella deckeri elongata | ||||||||||
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Ostracoda
- Platycopida
- Paraparchitidae
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? Paraparchites circulantis
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Ostracoda
- Palaeocopida
- Hollinidae
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Acanthobolbina loeblichi
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Ctenobolbina bispinata
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Ctenobolbina cancellata
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Ctenobolbina varicata
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| Ctenobolbina canellata varicata | ||||||||||
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Ctenobolbina inflata
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Ctenobolbina parva
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Ctenobolbina percarinata
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Eohollina depressa
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Eohollina papillata
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| Eohollina depressa papillata | ||||||||||
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Ostracoda
- Palaeocopida
- Cryptophyllidae
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Cryptophyllus gibbosum
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Cryptophyllus nuculopsis
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Cryptophyllus simpsoni
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Ostracoda
- Palaeocopida
- Leperditellidae
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Leperditella altiforma
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Leperditella incisa
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Leperditella minima
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| Leperditella rex minima | ||||||||||
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Kayina hybosa
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? Kayina porosa
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Punctaparchites rugosus
(Jones 1858)
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Ostracoda
- Palaeocopida
- Beyrichiidae
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Halliella labiosa
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Ostracoda
- Leperditellocopida
- Aparchitidae
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Aparchites maccoyii
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Aparchites millepunctatus
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Hyperchilarina nodosimarginata
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Ostracoda
- Leperditellocopida
- Schmidtellidae
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Schmidtella affinis
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Schmidtella asymmetrica
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Schmidtella brevis
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Schmidtella excavata
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Schmidtella minuta
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Schmidtella ovalis
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Schmidtella crassimarginata
Ulrich 1890
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Schmidtella transversa
Harris 1957
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Ostracoda
- Beyrichicopida
- Bolliidae
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Dicranella fragilis
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Dicranella macrocarinata
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Ostracoda
- Hollinocopida
- Tetradellidae
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Bromidella reticulata
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Ostracoda
- Hollinocopida
- Euprimitiidae
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Primitiella varicata
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| Primitiella constricta varicata | ||||||||||
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Ostracoda
- Hollinocopida
- Eurychilinidae
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Eurychilina subradiata
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Eurychilina ventrosa
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Ostracoda
- Hollinocopida
- Primitiopsidae
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Primitiopsis bassleri
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Primitiopsis elegans
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Primitiopsis excavatus
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Primitiopsis minutus
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Ostracoda
- Zygobolbidae
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Glymmatobolbina quadrata
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Oklahoma |
| Coordinates: | 34.0° North, 97.0° West (view map) | ||
| Paleocoordinates: | 22.5° South, 73.8° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | local area |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| *Period: | Middle Ordovician | *Local age/stage: | Blackriveran |
| Key time interval: | Blackriveran | ||
| Age range of interval: | 457.00000 - 449.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Bromide | Member: | Mountain Lake |
| Stratigraphic resolution: | member |
Lithology and environment
| Primary lithology: | gray sandstone |
| Secondary lithology: | gray "shale" |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: "[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. | |
| Geology comments: 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. | |
Taphonomy
| Size of fossils: | microfossils |
Collection methods and comments
| Collection methods: | chemical,field collection |
| Reason for describing collection: | biostratigraphic analysis |
| Taxonomic list comments:Modified from Harris, 1957. | |
Metadata
| Database number: | 23885 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | T. Hanson | Research group: | marine invertebrate |
| Created: | 2002-07-23 08:19:54 | Last modified: | 2002-07-23 12:50:13 |
| Access level: | the public | Released: | 2002-07-23 08:19:54 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6767. | R. O. Fay and A. A. Graffham. 1982. Biostratigraphic and paleontological studies. Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11 30-33 [S. Holland/T. Hanson/T. Hanson] |