Elkhorn Creek, 3 mi south of Richmond (Ordovician of the United States)

Where: Wayne County, Indiana (39.8° N, 84.9° W: paleocoordinates 25.1° S, 58.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Elkhorn Formation (Richmondian Group), Richmondian (449.6 - 445.5 Ma)

• Elkhorn sometimes is a member of the Whitewater

• bed-level stratigraphic resolution

Environment/lithology: marine; limestone

Size class: macrofossils

Preservation: replaced with silica

Collected by Foerste 1910; reposited in the OSU, USNM

Primary reference: A. F. Foerste. 1910. Preliminary notes on Cincinnatian and Lexington fossils of Ohio, Indiana, Kentucky, and Tennessee. Bulletin of the Scientific Laboratories of Denison University 16(1):17-100 [P. Wagner/P. Wagner]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 101552: authorized by Pete Wagner, entered by Pete Wagner on 24.12.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Protozoa
 Spumellaria -
Beatricea undulata Billings 1857 radiolarian
Anthozoa
 Stauriida - Streptelasmatidae
 Stauriida - Columnariidae
Columnaria vacua horn coral
Columnaria alveolata Goldfuss 1826 horn coral
Rhynchonellata
 Orthida - Plectorthidae
 Orthida - Platystrophiidae
"Platystrophia moritura" = Vinlandostrophia moritura
"Platystrophia moritura" = Vinlandostrophia moritura Cumings 1908
Bivalvia
 Modiomorphida - Allodesmatidae
Gastropoda
 Murchisoniina - Lophospiridae
"Schizolopha tropidophora" = Paupospira tropidophora
"Schizolopha tropidophora" = Paupospira tropidophora Meek 1873 snail
 Bellerophontida - Bucaniidae
Megalomphala crassa Koken 1896 snail
 Euomphalina - Helicotomidae
Helicotoma marginata Ulrich and Scofield 1897 snail
Rostroconchia
 Conocardiida - Conocardiidae
Conocardium richmondense n. sp. Foerste 1910