ZZ (Silurian of the United States)

Where: Iowa (41.9° N, 91.8° W: paleocoordinates 19.9° S, 57.2° W)

When: Buck Creek Quarry Member (Scotch Grove Formation), Llandovery (443.4 - 433.4 Ma)

Environment/lithology: lithified dolomite

• four lithologies: mounds with dense dolomudstone cores and coral fossils flanked by dipping crinoidal dolowackestones to dolopackstones (fauna similar to the lower Welton Mbr.); and flat-lying strata which are dense, well-bedded, and sparsely fossiliferous; dense to porous with large brachiopods; or dense with argillaceous partings and streaks, and sparsely fossiliferous.

Size class: microfossils

Primary reference: N. E. B. McAdams, A. M. Bancroft, B. D. Cramer and B. JWitzke. 2017. Integrated carbon isotope and conodont biochemostratigraphy of the Silurian (Aeronian–Telychian) of the East-Central Iowa Basin, Iowa, USA. Newsletters on Stratigraphy [E. Jarochowska/E. Jarochowska]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 186519: authorized by Emilia Jarochowska, entered by Sarah Haegele on 23.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Panderodontida - Panderodontidae
Panderodus unicostatus Branson and Mehl 1933 conodont