Silica Formation Unit 7 (7A,7B,7C): Givetian, Ohio

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Edrioasteroidea - Isorophida - Agelacrinitidae
Agelacrinites cf. southworthi
unclassified
Atactoechus cf. typicus
Crinoidea - Monobathrida - Hexacrinitidae
Arthroacantha carpenteri
Blastoidea - Pentremitida - Hyperoblastidae
Hyperoblastus reimanni
Tentaculita - Styliolinida - Styliolinidae
Styliolina fissurella (Hall 1879)
Craniata - Craniida - Craniidae
Philhedra crenistriatula
Petrocrania hamiltonensis
Strophomenata - Productida - Araksalosiidae
Devonalosia wrightorum Muir-Wood and Cooper 1960
Strophomenata - Productida - Productellidae
Spinulicosta spinulicosta (Hall 1857)
Strophomenata - Orthotetida - Schuchertellidae
Schuchertella sp. Girty 1904
Strophomenata - Strophomenida - Chonetidae
Devonochonetes fragilis
Devonochonetes coronatus (Hall 1857)
Longispina lissohybus
Strophomenata - Strophomenida - Strophodontidae
Pholidostrophia geniculata
Pholidostrophia nacrea
Strophodonta extenuata
corrected as Strophomena (Strophodonta)
Strophodonta "demissa" (Conrad 1842)
recombined as Strophodonta (Strophodonta) demissa
Megastrophia concava
Strophomenata - Strophomenida - Douvillinidae
Hercostrophia robusta
Douvillina distans
Strophomenata - Strophomenida - Leptostrophiidae
Protoleptostrophia perplana (Conrad 1839)
Rhynchonellata - Spiriferida - Hysterolitidae
Paraspirifer bownockeri
Rhynchonellata - Spiriferida - Mucrospiriferidae
Mucrospirifer prolificus
Rhynchonellata - Spiriferida - Spinocyrtiidae
Spinocyrtia "euryteines"
"Mediospirifer audaculus" (Conrad 1842)
Brachyspirifer audaculus (Conrad 1842)
recombined as Mediospirifer audaculus
Rhynchonellata - Tropidoleptidae
Tropidoleptus carinatus (Conrad 1839)
Rhynchonellata - Athyridida - Athyrididae
Athyris vittata
Athyris sp.
Rhynchonellata - Atrypida - Atrypidae
Atrypa "reticularis" (Linnaeus 1758)
original and current combination Anomia reticularis
Pseudoatrypa sp. Copper 1973
Pseudoatrypa cf. devoniana (Webster 1921)
Rhynchonellata - Spiriferinida - Cyrtinidae
Cyrtina alpenensis
Cyrtina "hamiltonensis" (Hall 1857)
Rhynchonellata - Rhynchonellida - Leiorhynchidae
Leiorhynchus lucasi
Rhynchonellata - Rhynchonellida - Trigonirhynchiidae
Cupularostrum prolificum
Rhynchonellata - Rhynchonellida - Machaerariidae
Callipleura cf. nobilis (Hall 1860)
Rhynchonellata - Terebratulida - Cranaenidae
Cranaena romingeri (Hall 1863)
Rhynchonellata - Orthida - Schizophoriidae
Schizophoria ferronensis
Rhynchonellata - Orthida - Draboviidae
Sphenophragmus cf. nanus
Rhynchonellata - Orthida - Rhipidomellidae
Rhipidomella cf. penelope
Rhipidomella vanuxemi (Hall 1857)
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
Anomalotoechus tuberatus
Stenolaemata - Cystoporida - Sulcoreteporidae
Sulcoretepora deissi
Stenolaemata - Cyclostomata - Hederellidae
Hederella alpenensis
Hederella bilineata
Hederella cirrhosa
Hederella concinnoides
Hederella delicatula
Hederella filiformis
Hederella magna
Hederella parvirugosa
Hederella rectifurcata
Hederella reimanni
Hederella thedfordensis
Hederella vagans
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 sp.
Stenolaemata - Cryptostomata
Intrapora irregularis
Intrapora sp. Hall 1883
Stenolaemata - Cryptostomata - Ptilodictyidae
Stictoporina granulifera
Stenolaemata - Cryptostomata - Semicosciniidae
Semicoscinium sp. Prout 1859
Stenolaemata - Cryptostomata - Acanthocladiidae
Penniretepora cf. irregularis
Stenolaemata - Cryptostomata - Fenestellidae
Reteporina striata
Stenolaemata - Trepostomata - Heterotrypidae
Leioclema alpenense
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 - Ostreida - Pterineidae
Ptychopteria flabellum
Cornellites flabellum
Leptodesma (Leiopteria) ausablensis
Limoptera macroptera
Limoptera curvata
Bivalvia - Grammysiidae
Grammysia bisulcata
Bivalvia - Modiomorphida - Cypricardiniidae
Cypricardinia indenta (Conrad 1842)
Bivalvia - Modiomorphida - Modiomorphidae
? Glossites informal sp. A Hall 1885
Modiomorpha subalta
Trilobita - Phacopida - Phacopidae
Phacops rana (Green 1832)
recombined as Eldredgeops rana
Anthozoa - Cystiphyllida - Cystiphyllidae
Cystiphylloides americanum
Anthozoa - Cystiphyllida - Digonophyllidae
Cayugaea intermittens
Cayugaea ? transitorius
Anthozoa - Stauriida - Amplexidae
Heterophrentis simplex
Anthozoa - Stauriida - Zaphrentidae
Heliophyllum bathycalyx
Heliophyllum microcarinatum
Heliophyllum halli Edwards and Haime 1851
Anthozoa - Stauriida - Bethanyphyllidae
Bethanyphyllum robustum
Anthozoa - Favositida - Micheliniidae
Pleurodictyum (Procteria) cornu
Pleurodictyum (Procteria) plana
Anthozoa - Favositida - Favositidae
Favosites turbinatus
Anthozoa - Favositida - Pachyporidae
Cladopora crassa
Cladopora lucasensis
Cladopora minuitissima
Striatopora intermittens
Trachypora labyrinthica
synonym of Thamnoptychia
Trachypora minuitissima
synonym of Thamnoptychia
Trachypora ? projecta
synonym of Thamnoptychia
Trachypora silicensis
synonym of Thamnoptychia
Anthozoa - Auloporida - Aulocystidae
Aulocystis auloporoidea
Aulocystis jacksoni
Aulocystis lucasensis
Anthozoa - Auloporida - Auloporidae
Planalveolitella parasitica
Aulopora microbuccinata
unclassified
Allonema sp.
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 calcareous "shale"
Secondary lithology: argillaceous "limestone"
Lithology description: Overall sequence: Bioclastic limestone; argillaceous limestone; shale. This unit: "shale, calcareous, blue-gray"; subunit 7A "with occasional argillaceous limestone lens. Contains much water-worn fossil debris"
Environment:marine indet.
Taphonomy
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:38457
Authorizer:M. Foote Enterer:M. Foote
Modifier:M. Foote Research group:marine invertebrate
Created:2004-04-21 20:20:23 Last modified:2006-09-13 14:01:03
Access level:the public Released:2004-04-21 20:20:23
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]