Silica Formation Unit 15 (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, calcareous shale

• Overall sequence: Bioclastic limestone; argillaceous limestone; shale. This unit: "shale, calcareous, 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 38466: authorized by Michael Foote, entered by Michael Foote on 21.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Stenolaemata
 Trepostomida -
Anomalotoechus sp. Duncan 1939
 Cyclostomata - Hederellidae
 Cryptostomata - Arthrostylidae
Strophomenata
 Productida - Chonetidae
 Strophomenida - Leptostrophiidae
 Strophomenida - Strophodontidae
Rhynchonellata
 Athyridida - Athyrididae
 Spiriferida - Mucrospiriferidae
 Rhynchonellida - Trigonirhynchiidae
Cupularostrum "sp. B" Sartenaer 1961
 Rhynchonellida - Leiorhynchidae
 Orthida - Schizophoriidae
Schizophoria sp. King 1850
 Orthida - Rhipidomellidae
Anthozoa
 Auloporida - Auloporidae