PBDB Collection

Silica Formation Unit 4 (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, very argillaceous, blue-gray, weathering to clay"

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 38453: authorized by Michael Foote, entered by Michael Foote on 21.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Strophomenata
Strophomenida - Strophodontidae	"Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa, Megastrophia concava "Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa Conrad 1842 Megastrophia concava
Strophomenida - Chonetidae	Devonochonetes fragilis, Devonochonetes coronatus Devonochonetes fragilis Devonochonetes coronatus Hall 1857
Rhynchonellata
Spiriferinida - Cyrtinidae	Cyrtina alpenensis Cyrtina alpenensis
Atrypida - Atrypidae	Atrypa "reticularis", Pseudoatrypa cf. devoniana Atrypa "reticularis" Linnaeus 1758 Pseudoatrypa cf. devoniana Webster 1921
Spiriferida - Spinocyrtiidae	Spinocyrtia "euryteines" Spinocyrtia "euryteines"
Spiriferida - Mucrospiriferidae	Mucrospirifer prolificus Mucrospirifer prolificus
Orthida - Schizophoriidae	Schizophoria ferronensis Schizophoria ferronensis
- Tropidoleptidae	Tropidoleptus carinatus Tropidoleptus carinatus Conrad 1839
Stenolaemata
Trepostomata - Heterotrypidae	Leioclema alpenense Leioclema alpenense
Cephalopoda
Nautilida - Centroceratidae	? Centroceras sp. ? Centroceras sp. Hyatt 1884
Oncocerida - Acleistoceratidae	? Acleistoceras sp. ? Acleistoceras sp. Hyatt 1884
Barrandeocerida - Nephriticeratidae	? Nephriticeras sp., ? Heracloceras ? inelegans ? Nephriticeras sp. Hyatt 1884 ? Heracloceras ? inelegans
Bivalvia
Modiomorphida - Modiomorphidae	Modiomorpha concentrica, Modiomorpha mytiloides Modiomorpha concentrica Conrad 1838 clam Modiomorpha mytiloides Conrad 1841 clam
Gastropoda
Euomphalina - Platyceratidae	"Platyostoma lineatum" = Platyostoma lineata "Platyostoma lineatum" = Platyostoma lineata Conrad 1842 snail
Anthozoa
Cystiphyllida - Cystiphyllidae	Cystiphylloides americanum Cystiphylloides americanum horn coral
Stauriida - Disphyllidae	Billingsastraea longicarinata, Hexagonaria anna, Hexagonaria stewartae, Hexagonaria tabulata, Hexagonaria truncata Billingsastraea longicarinata horn coral Hexagonaria anna horn coral Hexagonaria stewartae horn coral Hexagonaria tabulata horn coral Hexagonaria truncata horn coral
Stauriida - Eridophyllidae	Cylindrophyllum delicatum Cylindrophyllum delicatum horn coral
Stauriida - Amplexidae	Heterophrentis simplex Heterophrentis simplex horn coral
Auloporida - Aulocystidae	Aulocystis auloporoidea Aulocystis auloporoidea tabulate coral
Favositida - Pachyporidae	Cladopora roemeri Cladopora roemeri Billings 1860 tabulate coral
Favositida - Favositidae	Emmonsia arbuscula, Emmonsia radiciformis, Favosites hamiltoniae Emmonsia arbuscula tabulate coral Emmonsia radiciformis tabulate coral Favosites hamiltoniae tabulate coral