Also known as Muela Ck-2; USGS # 32841

Where: Zavala County, Texas (29.1° N, 100.1° W: paleocoordinates 35.1° N, 79.4° W)

• small collection-level geographic resolution

When: Escondido Formation, Maastrichtian (70.6 - 65.5 Ma)

• Haustator bilira assemblage zone.

• formation-level stratigraphic resolution

Environment/lithology: estuary or bay; argillaceous sandstone

Size class: mesofossils

Reposited in the USGS

Collection methods: bulk,

• Sohl collection

Primary reference: N. F. Sohl and C. F. Koch. 1984. Upper Cretaceous (Maestrichtian) larger invertebrate Fossils from the Haustator bilira Assemblage Zone in the west gulf Coastal Plain. USGS Open File Report 84-687:1-282 [M. Kosnik/M. Kosnik] more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 4578: authorized by Matt Kosnik, entered by Matt Kosnik on 14.08.1999