Also known as Pittman 25, TMM 43011

Where: Hamilton County, Texas (31.5° N, 98.3° W: paleocoordinates 29.2° N, 56.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Glen Rose Limestone Formation (Trinity Group), Early/Lower Albian (112.0 - 109.0 Ma)

• The Glen Rose formation spans through four ammonite zones with ages between latest Aptian and early Albian. Young 1974 suggested the Kasanskyella spathi ammonite zone is latest aptian, the Hypacanthoplites cragini zone is earliest Albian, the Douvilleiceras mammillatum and Hypacanthoplites comalensis zones are early Albian and may extend into the middle Albian. The Salenia texana Zone and Corbula bed fall within the mammillatum zone. The benthic foraminifera Orbitolina texana also suggests a late aptian - early albian age and is found in basal levels and in the upper member (Stricklin et al. 1971). Scott et al. (2007) estimated that the age of the Glen Rose Formation ranges from 113.3 to 108.0 Ma.

• bed-level stratigraphic resolution

Environment/lithology: marine; poorly lithified, yellow limestone

Size class: macrofossils

Preservation: mold/impression, trace

Reposited in the TMM

Collection methods: surface (in situ),

Primary reference: W. E. Wrather. 1922. Dinosaur tracks in Hamilton County, Texas. Journal of Geology 30(5):354-360 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 52488: authorized by Matthew Carrano, entered by Matthew Carrano on 09.08.2005, edited by Kaitlin Maguire

Creative Commons license: CC BY (attribution)