Claremont (Ordovician of the United States)

Where: Iowa (43.0° N, 91.7° W: paleocoordinates 19.7° S, 61.7° W)

• coordinate estimated from map

• basin-level geographic resolution

When: Amplexograptus manitoulinensis graptolite zone, Elgin Member (Scales Shale Formation), Maysvillian (452.0 - 449.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: limestone

• Environmental call by T. Hanson.
• Limestone, occasional shale partings. Lithology from C. O. Leverson, A. J. Gerk, R. E. Sloan, & L. A. Bisagno. General section of the Middle and Late Ordovician strata of Northeastern Iowa, Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, p.25-39. Edited by R. E. Sloan.

Size classes: macrofossils, microfossils

Primary reference: D. Goldman. 1995. Taxonomy, evolution, and biostratigraphy of the Orthograptus quadrimucronatus species group (Ordovician, Graptolithina). Journal of Paleontology 69(3):516-540 [S. Holland/S. Holland/S. Holland]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 184440: authorized by Pete Wagner, entered by Pete Wagner on 26.02.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

• Faunal list compiled from: 1. Whitfield's (1882) report in volume 4 of Chamberlin's Geology of Wisconsin 2. Clarke's (1897) report in volume III part 2 of Winchell's Final Reports of the Minnesota Geological and Natural History Survey 3. Bassler's Index 4. Individual articles (Foerste, Flower, etc.) 5. Treatise, Part K 6. Author's personal field data.
Graptolithina
 Diplograptoidea - Diplograptidae
Orthograptus eucharis Hall 1865 diplograptoid