Calliocrinus-Petalocrinus mirabilis Assoc., Fawn Creek Mbr., E Iowa: Wenlock, Iowa
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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unclassified
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Scutellidae indet.
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Crinoidea
- Myelodactylida
- Myelodactylidae
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Myelodactylus sp.
Hall 1852
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Crinoidea
- Pisocrinida
- Pisocrinidae
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Pisocrinus sp.
de Koninck 1858
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Crinoidea
- Cyathocrinida
- Petalocrinidae
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Petalocrinus mirabilis
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Crinoidea
- Monobathrida
- Periechocrinidae
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Periechocrinus sp.
Morris 1843
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Crinoidea
- Monobathrida
- Eucalyptocrinitidae
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Eucalyptocrinites sp.
Goldfuss 1831
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Calliocrinus sp.
Orbigny 1850
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Crinoidea
- Monobathrida
- Marsupiocrinidae
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Marsupiocrinus sp.
Morris 1843
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Blastoidea
- Coronata
- Stephanocrinidae
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Stephanocrinus sp.
Conrad 1842
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| S. (s.l.) | ||||||||||
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Rhombifera
- Caryocrinitidae
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Caryocrinites sp.
Say 1825
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Strophomenata
- Strophomenida
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Strophomenida indet.
Opik 1934
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Strophomenata
- Strophomenida
- Leptostrophiidae
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Protomegastrophia sp.
Caster 1939
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Strophomenata
- Strophomenida
- Rafinesquinidae
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Leptaena sp.
Dalman 1828
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Rhynchonellata
- Pentamerida
- Stricklandiidae
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"Costistricklandia" castellana
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Rhynchonellata
- Pentamerida
- Pentameridae
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Pentameroides subrectus
(Hall and Clarke 1892)
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Rhynchonellata
- Spiriferida
- Cyrtiidae
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Cyrtia sp.
Dalman 1828
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Eospirifer sp.
Schuchert 1913
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Rhynchonellata
- Atrypida
- Atrypidae
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Atrypa sp.
Dalman 1828
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Rhynchonellata
- Rhynchonellida
- Trigonirhynchiidae
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"Rhynchotreta" sp.
Hall 1879
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Rhynchonellata
- Orthida
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Orthida indet.
Schuchert and Cooper 1932
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Rhynchonellata
- Orthida
- Dalmanellidae
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Dalmanellidae indet.
Schuchert 1913
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Rhynchonellata
- Orthida
- Hesperorthidae
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Dolerorthis sp.
Schuchert and Cooper 1931
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Cephalopoda
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Nautiloidea indet.
Agassiz 1847
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Gastropoda
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Gastropoda indet.
Cuvier 1795
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Bivalvia
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Pelecypoda indet.
Goldfuss 1820
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| synonym of Bivalvia | ||||||||||
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Trilobita
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Trilobita indet.
Walch 1771
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Trilobita
- Phacopida
- Calymenidae
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Calymene sp.
Brongniart 1822
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Trilobita
- Phacopida
- Encrinuridae
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Encrinurus sp.
Emmrich 1844
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Anthozoa
- Rugosa
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Rugosa indet.
Milne-Edwards and Haime 1850
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Anthozoa
- Cystiphyllida
- Tryplasmatidae
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Porpites sp.
Schlotheim 1820
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Anthozoa
- Stauriida
- Lithostrotionidae
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"Diphyphyllum" sp.
Lonsdale 1845
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Anthozoa
- Stauriida
- Arachnophyllidae
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Arachnophyllum sp.
Dana 1846
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Anthozoa
- Favositida
- Favositidae
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Favosites sp.
Lamarck 1816
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Anthozoa
- Favositida
- Alveolitidae
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Alveolites sp.
Lamarck 1801
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Anthozoa
- Auloporida
- Syringoporidae
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Syringopora sp.
Goldfuss 1826
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Anthozoa
- Heliolitida
- Halysitidae
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Halysites sp.
von Waldheim 1813
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| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Iowa |
| Coordinates: | 42.1° North, 91.3° West (view map) | ||
| Paleocoordinates: | 22.9° South, 53.6° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | local area |
Time
| Period: | Silurian | Epoch: | Wenlock |
| 10 m.y. bin: | Silurian 2 | *Epoch: | Early/Lower Wenlock - Middle Wenlock |
| Key time interval: | Wenlock | ||
| Age range of interval: | 433.40000 - 427.40000 m.y. ago | ||
| * legacy (obsolete) database fields | |||
Stratigraphy
| Formation: | Scotch Grove | Member: | Fawn Creek |
| Stratigraphic resolution: | member |
Lithology and environment
| Primary lithology: | dolomitic,shelly/skeletal wackestone | ||
| Secondary lithology: | dolomitic,shelly/skeletal packstone | ||
| Includes fossils? | Y | ||
| Includes fossils? | Y | ||
| Lithology description: "Abundantly fossiliferous...At the Fawn Creek member type section the dominant lithology is porous, skeletal-moldic dolowackestones (especially crinoid-moldic), but crinoid-replaced dolowackestones and dolopackstones are also present." | |||
| Environment: | deep subtidal ramp | Tectonic setting: | cratonic basin |
| Glacial or sequence phase: | highstand systems tract | ||
| Geology comments: "Both debrris and whole fossils specimens common...brachiopod fauna most closely resembles BA 3...echinoderm fauna suggestive of...depth range between middle BA4 and middle BA 3"
SEP environmental call based on given description and same vol. page 807. | |||
Taphonomy
Collection methods and comments
| Reason for describing collection: | paleoecologic analysis |
Metadata
| Database number: | 26812 | ||
| Authorizer: | M. Foote | Enterer: | M. Foote |
| Modifier: | S. Peters | Research group: | marine invertebrate |
| Created: | 2002-11-04 10:00:08 | Last modified: | 2003-05-04 14:51:44 |
| Access level: | the public | Released: | 2002-11-04 10:00:08 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 4379. | 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] |