River Quarries, Covington (Ordovician of the United States)

Also known as Now submerged by Ohio River Dam

Where: Kenton County, Kentucky (39.1° N, 84.5° W: paleocoordinates 26.6° S, 62.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Belodina confluens conodont zone, Point Pleasant Tongue Member (Clays Ferry Formation), Shermanian (457.3 - 449.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; shelly/skeletal limestone and shale

• " [...] deposited at the northward-sloping northern edge of the platform in deeper water, low-energy, mud-bottom environments. Water depths in these environments were estimated by Cressman (1973) to have exceeded 80 ft (24 m), below fair-weather wave base, but within the zone of storm-current reworking."
• "The Point Pleasant Tongue consists of 100 ft of interbedded fossiliferous

•limestone and shale [...] "

Size class: macrofossils

Primary reference: E. O. Ulrich and W. H. Scofield. 1897. The Lower Silurian Gastropoda of Minnesota. The Paleontology of Minnesota 39(2):813-1081 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 155385: authorized by Pete Wagner, entered by Pete Wagner on 10.04.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Tergomya
 Cyrtonellida - Cyrtolitidae
"Cyrtolites parvus n. sp." = Paracyrtolites parvus
"Cyrtolites parvus n. sp." = Paracyrtolites parvus Ulrich and Scofield 1897
Gastropoda
 Bellerophontida - Tropidodiscidae
"Cyrtolitina nitidula" = Temnodiscus nitidula
"Cyrtolitina nitidula" = Temnodiscus nitidula Ulrich 1879 snail
 Bellerophontida - Pterothecidae
Carinaropsis explanata n. sp.
Carinaropsis explanata n. sp. Ulrich and Scofield 1897 snail
 Murchisoniina - Lophospiridae
Lophospira abnormis, "Lophospira medialis" = Lophospira milleri
Lophospira abnormis Ulrich and Scofield 1897 snail
"Lophospira medialis" = Lophospira milleri Miller 1877 snail
 Murchisoniina - Eotomariidae
Clathrospira conica, Liospira micula
Clathrospira conica Ulrich and Scofield 1897 snail
Liospira micula Hall and Whitney 1862 snail
Bivalvia
 Myalinida - Ambonychiidae
"? Byssonychia byrnesi" = Claudeonychia byrnesi
"? Byssonychia byrnesi" = Claudeonychia byrnesi Ulrich 1895 clam