PBDB Collection

Silica Formation Unit 2 (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; shelly/skeletal, gray limestone

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

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 38451: 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

unclassified
-	Billingsastrea longicarinata Billingsastrea longicarinata
Anthozoa
Favositida - Pachyporidae	Cladopora roemeri Cladopora roemeri Billings 1860 tabulate coral
Favositida - Favositidae	Favosites hamiltonae, Favosites turbinatus, Emmonsia arbuscula, Emmonsia radiciformis Favosites hamiltonae tabulate coral Favosites turbinatus tabulate coral Emmonsia arbuscula tabulate coral Emmonsia radiciformis tabulate coral
Auloporida - Aulocystidae	Aulocystis auloporoides Aulocystis auloporoides tabulate coral
Stauriida - Eridophyllidae	Cylindrophyllum delicatum Cylindrophyllum delicatum horn coral
Stauriida - Bethanyphyllidae	Bethanyphyllum robustum Bethanyphyllum robustum horn coral
Stauriida - Disphyllidae	Hexagonaria anna, Hexagonaria stewartae, Hexagonaria tabulata, Hexagonaria truncata Hexagonaria anna horn coral Hexagonaria stewartae horn coral Hexagonaria tabulata horn coral Hexagonaria truncata horn coral
Cystiphyllida - Cystiphyllidae	Cystiphylloides americanum Cystiphylloides americanum horn coral
Bivalvia
Modiomorphida - Modiomorphidae	Modiomorpha mytiloides, Modiomorpha concentrica, ? Glossites "sp. A" Modiomorpha mytiloides Conrad 1841 clam Modiomorpha concentrica Conrad 1838 clam ? Glossites "sp. A" Hall 1885 clam
Ostreida - Pterineidae	Leptodesma (Leiopteria) ausablensis, Limoptera curvata Leptodesma (Leiopteria) ausablensis oyster Limoptera curvata oyster
Myalinida - Ambonychiidae	Lophonychia cordata Lophonychia cordata Stewart 1933 clam
Gastropoda
Euomphalina - Platyceratidae	"Platyceras (Platyostoma) lineatum" = Platyostoma lineata "Platyceras (Platyostoma) lineatum" = Platyostoma lineata Conrad 1842 snail
Cephalopoda
Oncocerida - Acleistoceratidae	? Acleistoceras sp. ? Acleistoceras sp. Hyatt 1884
Barrandeocerida - Nephriticeratidae	? Nephriticeras sp., ? Heracloceras ? inelegans ? Nephriticeras sp. Hyatt 1884 ? Heracloceras ? inelegans
Nautilida - Centroceratidae	? Centroceras sp. ? Centroceras sp. Hyatt 1884 nautiloid
Rhynchonellata
Orthida - Schizophoriidae	Schizophoria ferronensis Schizophoria ferronensis
- Tropidoleptidae	Tropidoleptus carinatus Tropidoleptus carinatus Conrad 1839
Spiriferida - Spinocyrtiidae	Spinocyrtia "euryteines" Spinocyrtia "euryteines"
Spiriferida - Mucrospiriferidae	Mucrospirifer prolificus Mucrospirifer prolificus
Atrypida - Atrypidae	Atrypa "reticularis", Pseudoatrypa cf. devoniana Atrypa "reticularis" Linnaeus 1758 Pseudoatrypa cf. devoniana Webster 1921
Strophomenata
Strophomenida - Chonetidae	Devonochonetes fragilis, Devonochonetes coronatus Devonochonetes fragilis Devonochonetes coronatus Hall 1857
Strophomenida - Leptostrophiidae	Protoleptostrophia perplana Protoleptostrophia perplana Conrad 1839
Strophomenida - Strophodontidae	"Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa, Megastrophia concava "Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa Conrad 1842 Megastrophia concava
Stenolaemata
Trepostomata - Heterotrypidae	Leioclema alpenense Leioclema alpenense