Silica Formation Unit 5B (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, argillaceous limestone

• Overall sequence: Bioclastic limestone; argillaceous limestone; shale. This unit: "limestone, massive, argillaceous, blue-gray, crystalline"

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 38455: authorized by Michael Foote, entered by Michael Foote on 21.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Polychaeta
 Sabellida - Serpulidae
Bivalvia
 Myalinida - Ambonychiidae
Lophonychia cordata Stewart 1933 clam
 Ostreida - Pterineidae
 Modiomorphida - Modiomorphidae
Modiomorpha concentrica Conrad 1838 clam
Modiomorpha mytiloides Conrad 1841 clam
Gastropoda
 Euomphalina - Platyceratidae
"Platyostoma lineatum" = Platyostoma lineata Conrad 1842 snail
Cephalopoda
 Orthocerida - Orthoceratidae
"Orthoceras" sp. Breynius 1832
 Barrandeocerida - Nephriticeratidae
 Nautilida - Centroceratidae
? Centroceras sp. Hyatt 1884 nautiloid
 Oncocerida - Acleistoceratidae
Stenolaemata
 Fenestrata -
 Trepostomida -
 Cystoporida - Sulcoreteporidae
 Cystoporida - Fistuliporidae
 Cryptostomata -
 Cryptostomata - Hyphasmoporidae
 Trepostomata - Atactotoechidae
 Trepostomata -
 Cystoporata -
Strophomenata
 Productida - Chonetidae
 Strophomenida - Leptostrophiidae
 Strophomenida - Strophodontidae
Rhynchonellata
 Athyridida - Athyrididae
 Spiriferinida - Cyrtinidae
 Spiriferida - Spinocyrtiidae
 Spiriferida - Mucrospiriferidae
 Atrypida - Atrypidae
 Rhynchonellida - Leiorhynchidae
  - Tropidoleptidae
 Orthida - Schizophoriidae
 Orthida - Rhipidomellidae
Craniata
 Craniida - Craniidae
Anthozoa
 Auloporida - Aulocystidae
Aulocystis flabellata tabulate coral
Aulocystis jacksoni tabulate coral
 Auloporida - Auloporidae
Aulopora serpens Goldfuss 1829 tabulate coral
 Favositida - Favositidae
Emmonsia arbuscula tabulate coral
Emmonsia radiciformis tabulate coral
Favosites hamiltoniae tabulate coral
 Favositida - Pachyporidae
Cladopora roemeri tabulate coral
 Cystiphyllida - Cystiphyllidae
 Stauriida - Amplexidae
 Stauriida - Disphyllidae
 Stauriida - Phillipsastreidae
 Stauriida - Eridophyllidae
 Stauriida - Bethanyphyllidae