TT (Silurian of the United States)

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

When: Picture Rock Member (Hopkinton Formation), Llandovery (443.4 - 433.4 Ma)

Environment/lithology: lithified dolomite

• mainly thickly bedded to massive, but includes intervals of irregular and discontinuous thin to medium-bedded strata at some localities

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 186504: 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