Also known as Littleton Member, Cedar Valley Limestone

Where: Johnson County, Iowa (41.7° N, 91.5° W: paleocoordinates 33.9° S, 37.4° W)

• coordinate based on political unit

When: Littleton Member (Cedar Valley Formation), Givetian (387.7 - 382.7 Ma)

Environment/lithology: marine; limestone

Size class: mesofossils

Primary reference: L. R. Laudon. 1936. Notes on the Devonian crinoid fauna of Cedar Valley Formation of Iowa. Journal of Paleontology 10:60-66 [G. Webster/G. Webster]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 123303: authorized by John Alroy, entered by Briony Mamo on 18.01.2012

Creative Commons license: CC BY (attribution)