Silica Formation Unit 1 (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: "Limestone, massive, bioclastic, 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 38450: authorized by Michael Foote, entered by Michael Foote on 21.04.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Billingsastrea longicarinata
Rostroconchia
 Conocardiida - Hippocardiidae
"Conocardium cuneus" = Hoareicardia cunea
"Conocardium cuneus" = Hoareicardia cunea Conrad 1840
Cephalopoda
 Barrandeocerida - Nephriticeratidae
? Heracloceras ? inelegans, ? Nephriticeras sp.
? Nephriticeras sp. Hyatt 1884
 Oncocerida - Acleistoceratidae
? Acleistoceras sp.
 Nautilida - Centroceratidae
Centroceras sp.
Centroceras sp. Hyatt 1884 nautiloid
Gastropoda
 Euomphalina - Platyceratidae
"Platyceras (Platyostoma) lineatum" = Platyostoma lineata
"Platyceras (Platyostoma) lineatum" = Platyostoma lineata Conrad 1842 snail
 Murchisoniina - Loxonematidae
Loxonematidae sp.
Loxonematidae sp. Koken 1889 snail
Bivalvia
 Modiomorphida - Modiomorphidae
Modiomorpha concentrica, Modiomorpha mytiloides
Modiomorpha concentrica Conrad 1838 clam
Modiomorpha mytiloides Conrad 1841 clam
 Lucinida - Mactromyidae
Paracyclas proavia
Paracyclas proavia Goldfuss 1834 clam
 Myalinida - Ambonychiidae
Gosseletia triquetra
Gosseletia triquetra Conrad 1838 clam
 Ostreida - Pterineidae
Ptychopteria flabellum, Ptychopteria (Actinopteria) boydi
Rhynchonellata
 Spiriferida - Mucrospiriferidae
Mucrospirifer prolificus, Mucrospirifer alpenensis
 Spiriferida - Elythidae
"Elytha sp." = Elita
"Elytha sp." = Elita
 Spiriferida - Spinocyrtiidae
Spinocyrtia "euryteines"
 Atrypida - Atrypidae
Pseudoatrypa cf. devoniana, Atrypa reticularis
Atrypa reticularis Linnaeus 1758
  - Tropidoleptidae
Tropidoleptus carinatus
 Orthida - Schizophoriidae
Schizophoria ferronensis
Strophomenata
 Strophomenida - Leptostrophiidae
Protoleptostrophia perplana
 Strophomenida - Chonetidae
Devonochonetes fragilis, Devonochonetes coronatus
 Strophomenida - Strophodontidae
"Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa, Megastrophia concava
"Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa Conrad 1842
Stenolaemata
 Trepostomata - Heterotrypidae
Leioclema alpense
Trilobita
 Phacopida - Phacopidae
"Phacops rana" = Eldredgeops rana
"Phacops rana" = Eldredgeops rana Green 1832 trilobite
Anthozoa
 Cystiphyllida - Cystiphyllidae
Cystiphylloides americanum
 Stauriida - Eridophyllidae
Cylindrophyllum delicatulum
 Stauriida - Disphyllidae
Hexagonaria anna, Hexagonaria stewartae, Hexagonaria tabulata, Hexagonaria truncata
Hexagonaria anna horn coral
 Favositida - Pachyporidae
Cladopora roemeri
Cladopora roemeri Billings 1860 tabulate coral
 Favositida - Favositidae
Emmonsia arbuscula, Emmonsia radiciformis, Favosites hamiltonae, Favosites turbinatus
Emmonsia arbuscula tabulate coral
Emmonsia radiciformis tabulate coral
Favosites hamiltonae tabulate coral
Favosites turbinatus tabulate coral
 Auloporida - Aulocystidae
Aulocystis auloporoidea