Where: Hot Spring County, Arkansas (34.4° N, 92.8° W: paleocoordinates 38.4° N, 72.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Clayton Limestone Formation (Midway Group), Danian (66.0 - 61.6 Ma)

• over 20 m of massive, dark gray

•clays containing invertebrate casts and molds, thin interbedded limestone units, and locally phosphatic, sand and

•pebble lag deposits

Environment/lithology: marine; sandstone

Size classes: macrofossils, mesofossils, microfossils

Preservation: mold/impression, trace, concretion

Primary reference: H. M. Maisch, M. A. Becker, and M. L. Griffiths. 2020. Chondrichthyans from the Lower Clayton Limestone Unit of the Midway Group (Paleocene) near Malvern, Arkansas, USA, with comments on the K/Pg boundary. Palaeontologische Zeitschrift 94:561-593 [P. Holroyd/P. Holroyd/P. Mannion]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 206776: authorized by Patricia Holroyd, entered by Patricia Holroyd on 01.12.2019

Creative Commons license: CC BY (attribution)