Driftwood [Glen Rose Limestone] (Cretaceous of the United States)

Where: Hays County, Texas (30.1° N, 98.0° W: paleocoordinates 27.9° N, 56.5° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Douvilleiceras mammillatum ammonoid zone, Glen Rose Limestone Formation, Early/Lower Albian (112.0 - 109.0 Ma)

• 230 feet of dolomitic limestones, marly limestones, biolithites and evaporitic limestones underlain by Hensel Formation and overlain by Walnut Formation. Section of Glen Rose fossils sourced from was 6.5m thick, from above the "Corbula Bed". AGE: Early Albian, on the basis of ammonoid biostratigraphy; Douvilleiceras mammillatum zone.

• formation-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, dolomitic limestone

• described as an "open shelf" environment, the 3rd open shelf interval in the Glen Rose Limestone.
• dolomitic limestones, marly limestones, biolithites, evaporitic limestones

Primary reference: K. Young. 1974. Lower Albian and Aptian (Cretaceous) ammonites of Texas. Geoscience and Man, Aspects of Trinity Division geology 8:175-228 [A. Miller/K. Bulinski/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 52946: authorized by Arnold Miller, entered by Kate Bulinski on 29.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Douvilleiceratidae
Douvilleiceras mammillatum Schlotheim 1813 ammonite
UT-14392