Where: Grayson County County, Texas (33.8° N, 96.8° W: paleocoordinates 32.1° N, 61.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lewisville Member (Woodbine Formation), Cenomanian (100.5 - 93.9 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; gray, calcareous sandstone

Collection methods: Roy T. Hazzard 1941; L. W. Stephenson and H. H. Gray 1944.

Primary reference: L. W. Stephenson. 1952. Larger invertebrate fossils of the Woodbine formation (Cenomanian) of Texas. United States Geological Survey Professional Paper 242:1-225 [M. Kosnik/M. Kosnik/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 4639: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999

Creative Commons license: CC BY (attribution)