Silica Formation Unit 9A: Givetian, Ohio

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea - Monobathrida - Hexacrinitidae
Arthroacantha carpenteri
Tentaculita - Styliolinida - Styliolinidae
Styliolina fissurella (Hall 1879)
Strophomenata - Strophomenida - Chonetidae
Devonochonetes fragilis
Devonochonetes ? scitulus (Hall 1857)
Devonochonetes coronatus (Hall 1857)
Strophomenata - Strophomenida - Strophodontidae
Pholidostrophia nacrea
Strophodonta "demissa" (Conrad 1842)
recombined as Strophodonta (Strophodonta) demissa
Strophomenata - Strophomenida - Leptostrophiidae
Protoleptostrophia perplana (Conrad 1839)
Rhynchonellata - Spiriferida - Hysterolitidae
Paraspirifer bownockeri
Rhynchonellata - Spiriferida - Mucrospiriferidae
Mucrospirifer prolificus
Rhynchonellata - Spiriferida - Ambocoeliidae
Echinocoelia sp.
Rhynchonellata - Spiriferida - Spinocyrtiidae
Brachyspirifer audaculus (Conrad 1842)
recombined as Mediospirifer audaculus
Rhynchonellata - Spiriferinida - Cyrtinidae
Cyrtina "hamiltonensis" (Hall 1857)
Rhynchonellata - Rhynchonellida - Leiorhynchidae
Leiorhynchus lucasi
Rhynchonellata - Terebratulida - Cranaenidae
Cranaena romingeri (Hall 1863)
Tentaculitida - Tentaculitidae
Tentaculites bellulus Hall 1876
Gymnolaemata - Ctenostomata - Ascodictyidae
Eliasopora stellatum
Ascodictyon fusiforme
Stenolaemata - Cystoporata - Fistuliporidae
Fistuliporidae indet. Ulrich 1882
Fistulipora vesiculata
Stenolaemata - Cystoporata - Botrylloporidae
Botryllopora socialis
Stenolaemata - Trepostomida - Atactotoechidae
Leptotrypella ohioensis
Leptotrypella sp. Vinassa de Regny 1921
Stenolaemata - Cystoporida - Sulcoreteporidae
Sulcoretepora deissi
Sulcoretepora incisurata
Stenolaemata - Cyclostomata - Hederellidae
Hederella alpenensis
Hederella filiformis
Hederella magna
Hederella parvirugosa
Hederella rectifurcata
Hederella reimanni
Hederella thedfordensis
Stenolaemata - Cyclostomata - Reptariidae
Reptaria stolonifera Rolle 1851
Stenolaemata - Rhabdomesida - Rhabdomesidae
Acanthoclema ohioensis
Acanthoclema lineatum
Acanthoclema sulcatum
Stenolaemata - Cryptostomata - Arthrostylidae
Helopora inexpectata
Stenolaemata - Cryptostomata - Hyphasmoporidae
Streblotrypa anomala
Streblotrypa hamiltonensis
Streblotrypa sp.
Stenolaemata - Trepostomata - Heterotrypidae
Leioclema alpenense
Cephalopoda - Goniatitida - Tornoceratidae
Tornoceras (Tornoceras) uniagnulare
invalid subgroup of Tornoceras
Cephalopoda - Bactritida - Bactritidae
? Bactrites cf. arkonensis
Cephalopoda - Dissidocerida - Geisonoceratidae
Protokionoceras sp. Grabau and Shimer 1910
Gastropoda - Euomphalina - Platyceratidae
Platyceras (Platyceras) carinatum Hall 1862
Platyceras (Platyceras) rarispinum (Hall 1859)
Platyceras (Platyceras) bucculentum Hall 1862
Platyceras (Platyostoma) cf. lineatum (Conrad 1842)
corrected as Platyostoma lineata
Bivalvia - Myalinida - Ambonychiidae
Mytilarca cordata
Bivalvia - Pectinida - Pterinopectinidae
Pseudaviculopecten scabridus
Bivalvia - Ostreida - Pterineidae
Ptychopteria flabellum
Leptodesma (Leiopteria) ausablensis
Ptychopteria (Actinopteria) boydi (Conrad 1842)
Limoptera macroptera
Limoptera curvata
Bivalvia - Grammysiidae
Grammysia sylvanensis
Grammysia nodocostata
Bivalvia - Modiomorphida - Modiomorphidae
Modiomorpha subalata
Bivalvia - Lucinida - Mactromyidae
Paracyclas lirata
Malacostraca - Archaeostraca
Echinocaris punctata
Hebertocaris wideneri Stumm and Chilman 1969
Rhinocaris ehlersi
Malacostraca - Archaeostraca - Rhinocarididae
Dithyrocaris cf. neptuni
Trilobita - Proetida - Proetidae
Dechenella (Basidechenella) lucasensis Stumm 1965
recombined as Basidechenella lucasensis
Dechenella (Dechenella) alpenensis Stumm 1953
recombined as Dechenella alpenensis
Trilobita - Phacopida - Phacopidae
Phacops rana (Green 1832)
recombined as Eldredgeops rana
Anthozoa - Cystiphyllida - Cystiphyllidae
Cystiphylloides americanum
Anthozoa - Stauriida - Amplexidae
Heterophrentis simplex
Anthozoa - Auloporida - Auloporidae
Planalveolitella parasitica
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 at base to very argillaceous at top, blue-gray, abundant marcasite concretions, weathering to sticky clay when wet. Very fossiliferous, producing most of the common Silica species"
Environment:marine indet.
Taphonomy
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:38459
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2004-04-21 20:29:15 Last modified:2006-09-13 14:01:03
Access level:the public Released:2004-04-21 20:29:15
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]