Ion Formation, St. James Member Ostracodes of Iowa: Kirkfieldian, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
unclassified
|
|||||||
|
Scofielda bilateralis
|
|||||||
|
Raymondiata goniglypta
|
|||||||
|
Eoschmidtella umbonata
|
|||||||
|
? Primitopsis bella
|
|||||||
|
Ostracoda
- Palaeocopida
- Hollinidae
|
|||||||
|
Winchellatia lansingensis
|
|||||||
|
Winchellatia longispina
|
|||||||
|
Winchellatia minnesotensis
|
|||||||
|
Parabolbina antecedans
|
|||||||
|
Parabolbina carinifera
|
|||||||
|
Parabolbina staufferi
|
|||||||
|
Ostracoda
- Palaeocopida
- Beyrichiidae
|
|||||||
|
Halliella magnipunctata
|
|||||||
|
Ostracoda
- Palaeocopida
- Bassleratiidae
|
|||||||
|
Bassleratia typa
|
|||||||
|
Ostracoda
- Palaeocopida
- Leperditellidae
|
|||||||
|
Punctaparchites rugosus
(Jones 1858)
|
|||||||
|
Leperditella macra
|
|||||||
|
Leperditella millepunctata
|
|||||||
|
Leperditella persimilis
|
|||||||
|
Ostracoda
- Palaeocopida
- Cryptophyllidae
|
|||||||
|
Cryptophyllus sulcatus
|
|||||||
|
Cryptophyllus oboloides
|
|||||||
|
Ostracoda
- Podocopida
- Bairdiidae
|
|||||||
|
Krausella arcuata
|
|||||||
|
Krausella curtispina
|
|||||||
|
Ostracoda
- Podocopida
- Bythocyprididae
|
|||||||
|
? Bythocypris curta
|
|||||||
|
Ostracoda
- Podocopida
- Bairdiocyprididae
|
|||||||
|
Bairdiocypris granti
|
|||||||
|
Ostracoda
- Beyrichicopida
- Bolliidae
|
|||||||
|
Dicranella bicornis
|
|||||||
|
Dicranella marginata
|
|||||||
|
Dicranella spinosa
|
|||||||
|
Dicranella simplex
|
|||||||
|
Dicranella typa
|
|||||||
|
Bollia subaequata
|
|||||||
|
Parenthatia camerata
|
|||||||
|
Parenthatia punctata
|
|||||||
|
Maratia sp.
Kay 1940
|
|||||||
|
Maratia mara
|
|||||||
|
Ostracoda
- Beyrichicopida
- Aechminidae
|
|||||||
|
Byrsolopsina centipunctata
|
|||||||
|
Byrsolopsina normella
|
|||||||
|
Byrsolopsina ovata
|
|||||||
|
Byrsolopsina planilateralis
|
|||||||
|
Pseudulrichia simplex
|
|||||||
|
Aechmina ionensis
|
|||||||
|
Ostracoda
- Beyrichicopida
- Circulinidae
|
|||||||
|
Pedomphalella intermedia
|
|||||||
|
Pedomphalella subovata
|
|||||||
|
Ostracoda
- Leperditellocopida
- Aparchitidae
|
|||||||
|
Bullatella granilabiatus
|
|||||||
|
Saccelatia angularis
|
|||||||
|
Saccelatia arcuamuralis
|
|||||||
|
Saccelatia arrecta
|
|||||||
|
Saccelatia bullata
|
|||||||
|
Saccelatia cletifera
|
|||||||
|
Aparchites carinatus
|
|||||||
|
Aparchites chatfieldensis
|
|||||||
|
Aparchites ellipticus
|
|||||||
|
Aparchites fimbriatus
|
|||||||
|
Aparchites macrus
|
|||||||
|
Aparchites paratumida
|
|||||||
|
Ostracoda
- Leperditellocopida
- Schmidtellidae
|
|||||||
|
Paraschmidtella uphami
|
|||||||
|
Schmidtella affinis
|
|||||||
|
Schmidtella brevis
|
|||||||
|
Ostracoda
- Hollinocopida
- Tvaerenellidae
|
|||||||
|
Hesperidella initialis
|
|||||||
|
Ostracoda
- Hollinocopida
- Tetradellidae
|
|||||||
|
Bellornatia tricollis
|
|||||||
|
Bromidella depressa
|
|||||||
|
Tetradella ellipsilira
|
|||||||
|
Tetradella ulrichi
|
|||||||
|
Ceratopsis humilinoda
|
|||||||
|
Ceratopsis quadrifida
|
|||||||
|
Rigidella sp.
Opik 1937
|
|||||||
|
Thomasatia falcicosta
|
|||||||
|
Ostracoda
- Hollinocopida
- Euprimitiidae
|
|||||||
|
Euprimitia labiosa
|
|||||||
|
Euprimitia linepunctata
|
|||||||
|
? Euprimitia celata
|
|||||||
|
Euprimitia sanctipauli
|
|||||||
|
Hallatia convexa
|
|||||||
|
Hallatia duplicata
|
|||||||
|
Primitiella plattevillensis
|
|||||||
|
Primitiella sp.
Ulrich 1894
|
|||||||
|
Primitiella constricta
Ulrich 1894
|
|||||||
|
Laccoprimitia fillmorensis
|
|||||||
|
Ostracoda
- Hollinocopida
- Eurychilinidae
|
|||||||
|
Eurychilina incurva
|
|||||||
|
Eurychilina partifimbriata
|
|||||||
|
Eurychilina reticulata
|
|||||||
|
Eurychilina ventrosa
|
|||||||
|
Nodambichilina symmetrica
(Ulrich 1894)
|
|||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Iowa |
| Coordinates: | 42.0° North, 94.0° West (view map) | ||
| Paleocoordinates: | 19.4° South, 65.5° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | basin |
Time
| Period: | Ordovician | Epoch: | Late/Upper Ordovician |
| 10 m.y. bin: | Ordovician 4-5 | ||
| *Period: | Middle Ordovician - Late/Upper Ordovician | *Local age/stage: | Kirkfieldian |
| Key time interval: | Kirkfieldian | ||
| Age range of interval: | 457.00000 - 449.80000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Lithology and environment
| Primary lithology: | "shale" |
| Includes fossils? | Y |
| Environment: | carbonate indet. |
| Geology comments: Environmental call by T. Hanson | |
Taphonomy
| Size of fossils: | microfossils |
Collection methods and comments
| Collection methods: | chemical,field collection |
| Reason for describing collection: | biostratigraphic analysis |
Metadata
| Database number: | 23215 | ||
| Authorizer: | S. Holland | Enterer: | T. Hanson |
| Modifier: | S. Holland | Research group: | marine invertebrate |
| Created: | 2002-07-10 15:29:32 | Last modified: | 2004-10-22 11:37:45 |
| Access level: | the public | Released: | 2002-07-10 15:29:32 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 6656. | F. M. Swain. 1987. Middle and Upper Ordovician Ostracoda of Minnesota and Iowa. In R. E. Sloan (ed.), Minnesota Geological Survey Report of Investigations 35:99-101 [S. Holland/T. Hanson/S. Bruning] |