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 | |
Anthozoa | |
Cladopora roemeri Billings 1860 tabulate coral | |
Favosites hamiltonae tabulate coral
Favosites turbinatus tabulate coral
Emmonsia arbuscula tabulate coral
Emmonsia radiciformis tabulate coral | |
Aulocystis auloporoides tabulate coral | |
Cylindrophyllum delicatum horn coral | |
Bethanyphyllum robustum horn coral | |
Hexagonaria anna horn coral
Hexagonaria stewartae horn coral
Hexagonaria tabulata horn coral
Hexagonaria truncata horn coral | |
Cystiphylloides americanum horn coral | |
Bivalvia | |
Modiomorpha mytiloides Conrad 1841 clam
Modiomorpha concentrica Conrad 1838 clam
? Glossites "sp. A" Hall 1885 clam | |
Limoptera curvata oyster | |
Lophonychia cordata Stewart 1933 clam | |
Gastropoda | |
"Platyceras (Platyostoma) lineatum" = Platyostoma lineata
"Platyceras (Platyostoma) lineatum" = Platyostoma lineata Conrad 1842 snail | |
Cephalopoda | |
? Acleistoceras sp. Hyatt 1884 | |
? Nephriticeras sp. Hyatt 1884 | |
? Centroceras sp. Hyatt 1884 nautiloid | |
Rhynchonellata | |
Tropidoleptus carinatus Conrad 1839 | |
Atrypa "reticularis" Linnaeus 1758
Pseudoatrypa cf. devoniana Webster 1921 | |
Strophomenata | |
Protoleptostrophia perplana Conrad 1839 | |
"Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa, Megastrophia concava
"Strophodonta "demissa"" = Strophodonta (Strophodonta) demissa Conrad 1842 | |
Stenolaemata | |