Lenoir (Ordovician of the United States)

Where: Tennessee (35.8° N, 84.3° W: paleocoordinates 29.7° S, 70.2° W)

• coordinate based on political unit

• basin-level geographic resolution

When: Cahabagnathus sweeti conodont zone, Lenoir Formation, Chazyan (470.0 - 457.3 Ma)

• "M.Ord. Chazyan. NOT basal portion of Fm.".

•

•Also in Pygodus serra zone

Environment/lithology: offshore shelf; argillaceous lime mudstone

• "argillaceous micrites. shelf edge; 40-50m or deeper BA5. stable shelf. tectonic highland to E."

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

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 172825: authorized by Pete Wagner, entered by Pete Wagner on 26.08.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Euomphalina - Raphistomatidae
"Liospira docens" = Raphistoma striatum
"Liospira docens" = Raphistoma striatum Emmons 1842 snail
 Murchisoniina - Trochonematidae
"? Lophospira knoxvillensis n. sp." = Trochonemella knoxvillensis
"? Lophospira knoxvillensis n. sp." = Trochonemella knoxvillensis Ulrich and Scofield 1897 snail