Where: Fall River County, South Dakota (43.2° N, 103.2° W: paleocoordinates 49.0° N, 70.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Didymoceras nebrascense ammonoid zone, Pierre Shale Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• Didymoceras nebrascense, found with this crab, dates the specimen as late Campanian

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified, gray, green limestone

Size class: macrofossils

Preservation: replaced with calcite, replaced with other

Reposited in the SDSM

Primary reference: G. A. Bishop and A. B. Williams. 2000. Fossil crabs from Tepee Buttes, submarine seeps of the Late Cretaceous Pierre Shale, South Dakota and Colorado, U.S.A. Journal of Crustacean Biology 20(2):286-300 [M. Clapham/J. Fearon/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 234300: authorized by Matthew Clapham, entered by J Fearon on 27.03.2024, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)