Silica Formation Unit 6: Givetian, Ohio

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Craniata - Craniida - Craniidae
Petrocrania hamiltonensis
Strophomenata - Strophomenida - Chonetidae
Devonochonetes fragilis
Devonochonetes coronatus (Hall 1857)
Strophomenata - Strophomenida - Strophodontidae
Strophodonta "demissa" (Conrad 1842)
recombined as Strophodonta (Strophodonta) demissa
Megastrophia concava
Strophomenata - Strophomenida - Leptostrophiidae
Protoleptostrophia perplana (Conrad 1839)
Rhynchonellata - Spiriferida - Mucrospiriferidae
Mucrospirifer prolificus
Rhynchonellata - Spiriferida - Spinocyrtiidae
Spinocyrtia "euryteines"
Rhynchonellata - Tropidoleptidae
Tropidoleptus carinatus (Conrad 1839)
Rhynchonellata - Athyridida - Athyrididae
Athyris vittata
Rhynchonellata - Atrypida - Atrypidae
Atrypa "reticularis" (Linnaeus 1758)
original and current combination Anomia reticularis
Pseudoatrypa cf. devoniana (Webster 1921)
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria ferronensis
Tentaculitida - Tentaculitidae
Tentaculites bellulus Hall 1876
Stenolaemata - Cystoporata - Fistuliporidae
Fistulipora vesiculata
Stenolaemata - Trepostomida - Atactotoechidae
Anomalotoechus tuberatus
Anomalotoechus sp. Duncan 1939
Stenolaemata - Cystoporida - Sulcoreteporidae
Sulcoretepora deissi
Stenolaemata - Cryptostomata - Hyphasmoporidae
Streblotrypa anomala
? Streblotrypa ? hamiltonensis
Stenolaemata - Cryptostomata - Fenestellidae
Fenestrellina sp. d'Orbigny 1849
Stenolaemata - Trepostomata - Heterotrypidae
Leioclema alpenense
Cephalopoda - Nautilida - Centroceratidae
? Centroceras sp. Hyatt 1884
Cephalopoda - Oncocerida - Acleistoceratidae
? Acleistoceras sp. Hyatt 1884
Cephalopoda - Barrandeocerida - Nephriticeratidae
? Nephriticeras sp. Hyatt 1884
? Heracloceras ? inelegans
Gastropoda - Euomphalina - Platyceratidae
Platyostoma lineatum Conrad 1842
corrected as Platyostoma lineata
Bivalvia - Myalinida - Ambonychiidae
Mytilarca cordata
Bivalvia - Ostreida - Pterineidae
Ptychopteria flabellum
Cornellites flabellum
Leptodesma (Leiopteria) ausablensis
Ptychopteria (Actinopteria) boydi (Conrad 1842)
Limoptera curvata
Bivalvia - Grammysiidae
Grammysia informal sp. B de Verneuil 1847
Grammysia informal sp. A de Verneuil 1847
Grammysioidea informal sp. A (Williams 1916)
original and current combination Grammysia (Grammysioidea)
Grammysioidea informal sp. B (Williams 1916)
original and current combination Grammysia (Grammysioidea)
Bivalvia - Modiomorphida - Modiomorphidae
Modiomorpha mytiloides (Conrad 1841)
Modiomorpha concentrica (Conrad 1838)
Bivalvia - Lucinida - Mactromyidae
Paracyclas lirata
Trilobita - Phacopida - Phacopidae
Phacops rana (Green 1832)
recombined as Eldredgeops rana
Anthozoa - Cystiphyllida - Cystiphyllidae
Cystiphylloides americanum
Anthozoa - Stauriida - Amplexidae
Heterophrentis simplex
Anthozoa - Stauriida - Zaphrentidae
Heliophyllum halli Edwards and Haime 1851
Anthozoa - Stauriida - Bethanyphyllidae
Bethanyphyllum robustum
Anthozoa - Stauriida - Eridophyllidae
Cylindrophyllum delicatulum
Anthozoa - Stauriida - Disphyllidae
Hexagonaria anna
Hexagonaria stewartae
Hexagonaria tabulata
Hexagonaria truncata
Billingsastraea longicarinata
Anthozoa - Favositida - Favositidae
Favosites hamiltoniae
Emmonsia arbuscula
Emmonsia radiciformis
Anthozoa - Favositida - Pachyporidae
Cladopora roemeri (Billings 1860)
Anthozoa - Auloporida - Aulocystidae
Aulocystis auloporoidea
see common names

Geography
Country:United States State/province:Ohio
Coordinates: 41.7° North, 83.7° West (view map)
Paleocoordinates:36.4° South, 31.0° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Devonian Epoch:Middle Devonian
Stage:Givetian 10 m.y. bin:Devonian 3
Key time interval:Givetian
Age range of interval:387.70000 - 382.70000 m.y. ago
Stratigraphy
Formation:Silica
Stratigraphic resolution:group of beds
Lithology and environment
Primary lithology:gray,blue argillaceous "limestone"
Lithology description: Overall sequence: Bioclastic limestone; argillaceous limestone; shale. This unit: "limestone, argillaceous, blue-gray, very argillaceous at top and base"
Environment:marine indet.
Taphonomy
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:38456
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2004-04-21 20:16:10 Last modified:2006-09-13 14:01:03
Access level:the public Released:2004-04-21 20:16:10
Creative Commons license:CC BY
Reference information

Primary reference:
10310. R. V. Kesling and R. B. Chilman. 1975. Strata and megafossils of the Middle Devonian Silica Formation. University of Michigan Papers on Paleontology 8:1-408 [M. Foote/M. Foote/M. Foote]