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De Cordova Bend Dam (Cretaceous of the United States)

Also known as SMU no. 246

Where: Hood County, Texas (32.4° N, 97.7° W: paleocoordinates 30.0° N, 55.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Upper Member (Glen Rose Formation), Early/Lower Albian (112.6 - 109.0 Ma)

• from units L, M, N, and O in the local section, which span 1.0, about 0.7, 0.2, and 1.5 m, respectively

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; marl and packstone

• "shallow, low energy marine environment"
• four successive beds are "marl... limestone with marl interbeds... dense packstone... [and] marl containing numerous flaggy packstone interbeds"

Size classes: macrofossils, mesofossils

Collection methods: bulk, surface (float), sieve,

• "surface collecting and wet-sieving of bulk samples with 10-, 18-, 30-, and 45-mesh screens"

Primary reference: A. Barck. 1992. Paleontology of the Glen Rose Formation (lower Cretaceous), Hood County, Texas. The Texas Journal of Science 44(1):3-24 [J. Alroy/M. Sommers] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27774: authorized by John Alroy, entered by John Alroy on 08.01.2003, edited by Matthew Carrano and Patricia Holroyd

Creative Commons license: CC BY (attribution)