Silica Formation Unit 7 (7A,7B,7C) (Devonian of the United States)

Where: Ohio (41.7° N, 83.7° W: paleocoordinates 36.4° S, 31.0° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Silica Formation, Givetian (387.7 - 382.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, blue, calcareous shale and argillaceous limestone

• 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"

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 38457: authorized by Michael Foote, entered by Michael Foote on 21.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Trilobita
 Phacopida - Phacopidae
"Phacops rana" = Eldredgeops rana
"Phacops rana" = Eldredgeops rana Green 1832 trilobite
Bivalvia
 Ostreida - Pterineidae
 Carditida - Cardiniidae
Cypricardinia indenta Conrad 1842 clam
 Cardiidia - Grammysiidae
 Modiomorphida - Modiomorphidae
Gastropoda
 Euomphalina - Platyceratidae
"Platyceras (Platyostoma) cf. lineatum" = Platyostoma lineata Conrad 1842 snail
Tentaculita
 Styliolinida - Styliolinidae
Gymnolaemata
 Ctenostomata - Ascodictyidae
Stenolaemata
 Fenestrida - Acanthocladiidae
 Fenestrata -
 Trepostomida -
 Cyclostomata - Hederellidae
 Cyclostomata -
 Cystoporida - Sulcoreteporidae
 Cystoporida - Fistuliporidae
 Cryptostomata -
 Cryptostomata - Arthrostylidae
 Cryptostomata - Hyphasmoporidae
 Trepostomata - Atactotoechidae
 Trepostomata -
 Rhabdomesida - Nikiforovellidae
 Cystoporata -
Blastoidea
 Fissiculata - Phaenoschismatidae
Edrioasteroidea
 Isorophida - Agelacrinitidae
Crinoidea
 Monobathrida -
Lophophorata
 Tentaculitida - Tentaculitidae
Strophomenata
 Productida - Araksalosiidae
Devonalosia wrightorum Muir-Wood and Cooper 1960
 Productida - Productellidae
 Productida - Chonetidae
 Orthotetida - Schuchertellidae
Schuchertella sp. Girty 1904
 Strophomenida - Douvillinidae
 Strophomenida - Leptostrophiidae
 Strophomenida - Strophodontidae
Rhynchonellata
 Athyridida - Athyrididae
 Terebratulida - Cranaenidae
 Spiriferinida - Cyrtinidae
 Spiriferida - Spinocyrtiidae
""Mediospirifer" "audaculus"" = Mediospirifer audaculus, "Brachyspirifer audaculus" = Mediospirifer audaculus, Spinocyrtia "euryteines"
""Mediospirifer" "audaculus"" = Mediospirifer audaculus Conrad 1842
"Brachyspirifer audaculus" = Mediospirifer audaculus Conrad 1842
 Spiriferida - Mucrospiriferidae
 Spiriferida - Hysterolitidae
 Atrypida - Atrypidae
Pseudoatrypa sp. Copper 1973
Atrypa "reticularis" Linnaeus 1758
 Rhynchonellida - Trigonirhynchiidae
 Rhynchonellida - Machaerariidae
 Rhynchonellida - Leiorhynchidae
  - Tropidoleptidae
 Orthida - Draboviidae
 Orthida - Schizophoriidae
 Orthida - Rhipidomellidae
Craniata
 Craniida - Craniidae
Anthozoa
 Auloporida - Aulocystidae
Aulocystis jacksoni tabulate coral
Aulocystis lucasensis tabulate coral
 Auloporida - Auloporidae
 Favositida - Favositidae
Favosites turbinatus tabulate coral
 Favositida - Micheliniidae
 Favositida - Pachyporidae
Cladopora crassa, Cladopora lucasensis, Cladopora minuitissima, "Trachypora labyrinthica" = Thamnoptychia, "Trachypora minuitissima" = Thamnoptychia, "Trachypora ? projecta" = Thamnoptychia, "Trachypora silicensis" = Thamnoptychia, Striatopora intermittens
Cladopora crassa tabulate coral
Cladopora lucasensis tabulate coral
Cladopora minuitissima tabulate coral
"Trachypora labyrinthica" = Thamnoptychia tabulate coral
"Trachypora minuitissima" = Thamnoptychia tabulate coral
"Trachypora ? projecta" = Thamnoptychia tabulate coral
"Trachypora silicensis" = Thamnoptychia tabulate coral
Striatopora intermittens tabulate coral
 Cystiphyllida - Cystiphyllidae
 Cystiphyllida - Digonophyllidae
 Stauriida - Amplexidae
 Stauriida - Zaphrentidae
Heliophyllum halli Edwards and Haime 1851 horn coral
 Stauriida - Bethanyphyllidae
 Life -