Silica Formation Unit 8: Givetian, Ohio

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Auloporida - Auloporidae
Planalveolitella parasitica
Anthozoa - Auloporida - Aulocystidae
Aulocystis flabellata
Anthozoa - Stauriida - Amplexidae
Heterophrentis simplex
Anthozoa - Stauriida - Bethanyphyllidae
Bethanyphyllum robustum
Anthozoa - Cystiphyllida - Cystiphyllidae
Cystiphylloides americanum
Crinoidea - Monobathrida - Hexacrinitidae
Arthroacantha carpenteri
Gastropoda - Euomphalina - Platyceratidae
Platyceras (Platyceras) rarispinum (Hall 1859)
Platyceras (Platyceras) carinatum Hall 1862
Platyceras (Platyceras) bucculentum Hall 1862
Platyceras (Platyostoma) cf. lineatum (Conrad 1842)
corrected as Platyostoma lineata
Bivalvia - Grammysiidae
Grammysia bisulcata
Bivalvia - Modiomorphida - Modiomorphidae
Modiomorpha subalata
Bivalvia - Ostreida - Pterineidae
Ptychopteria flabellum
Ptychopteria (Actinopteria) boydi (Conrad 1842)
Leptodesma (Leiopteria) ausablensis
Tentaculitida - Tentaculitidae
Tentaculites bellulus Hall 1876
Strophomenata - Strophomenida - Strophodontidae
Megastrophia concava
Strophodonta "demissa" (Conrad 1842)
recombined as Strophodonta (Strophodonta) demissa
Strophomenata - Strophomenida - Chonetidae
Devonochonetes coronatus (Hall 1857)
Strophomenata - Strophomenida - Leptostrophiidae
Protoleptostrophia perplana (Conrad 1839)
Rhynchonellata - Spiriferida - Spinocyrtiidae
"Mediospirifer audaculus" (Conrad 1842)
Spinocyrtia "euryteines"
Rhynchonellata - Spiriferida - Hysterolitidae
Paraspirifer bownockeri
Rhynchonellata - Spiriferida - Mucrospiriferidae
Mucrospirifer prolificus
Rhynchonellata - Atrypida - Atrypidae
Pseudoatrypa cf. devoniana (Webster 1921)
Atrypa "reticularis" (Linnaeus 1758)
original and current combination Anomia reticularis
Stenolaemata - Cystoporata - Fistuliporidae
Fistulipora vesiculata
Stenolaemata - Cyclostomata - Hederellidae
Hederella bilineata
Stenolaemata - Cyclostomata - Reptariidae
Reptaria stolonifera Rolle 1851
Stenolaemata - Cryptostomata - Hyphasmoporidae
Streblotrypa anomala
Stenolaemata - Trepostomida - Atactotoechidae
Leptotrypella sp. Vinassa de Regny 1921
Leptotrypella ohioensis
Anomalotoechus sp. Duncan 1939
Tentaculita - Styliolinida - Styliolinidae
Styliolina fissurella (Hall 1879)
Trilobita - Phacopida - Phacopidae
Phacops rana (Green 1832)
recombined as Eldredgeops rana
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:pyritic,gray,blue argillaceous "limestone"
Lithology description: Overall sequence: Bioclastic limestone; argillaceous limestone; shale. This unit: "limestone, massive, argillaceous, blue-gray, abundant marcasite concretions, relatively hard. All fossils strongly pyritized"
Environment:marine indet.
Taphonomy
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:38458
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2004-04-21 20:23:52 Last modified:2006-09-13 14:01:03
Access level:the public Released:2004-04-21 20:23:52
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]