Banks of Escanaba River, below power dam at Chandler Falls (Ordovician to of the United States)

Where: Delta County, Michigan (45.8° N, 87.1° W: paleocoordinates 20.3° S, 58.9° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Plectodina tenuis conodont zone, Chandler Falls Formation, Rocklandian to Rocklandian (457.3 - 449.6 Ma)

• Plectodina tenuis zone according to Larowe 2000. Was put in "Limestone" member, but there are no member divisions and most of the formation is argillaceous limestone.

• member-level stratigraphic resolution

Environment/lithology: limestone

Size class: macrofossils

Reposited in the AMNH, UMMP

Primary reference: E.C. Stumm and E.G. Kauffman. 1958. Calymenid trilobites from the Ordovician rocks of Michigan. Journal of Paleontology 32(5):943-960 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 75949: authorized by Pete Wagner, entered by Pete Wagner on 06.11.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Trilobita
 Phacopida - Calymenidae
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria, Flexicalymene magnipapilla n. sp.
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria Conrad 1841 trilobite
Flexicalymene magnipapilla n. sp. Stumm and Kauffman 1958 trilobite