USGS 18587, Tequesquite Creek (Cretaceous of the United States)

Where: Maverick County, Texas (29.1° N, 100.6° W: paleocoordinates 34.9° N, 74.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Austin Chalk Formation, Early/Lower Campanian (83.5 - 70.6 Ma)

• Upper part of Austin Chalk. At Tequesquite Creek, the upper Austin Chalk includes the upper Santonian Texanites shiloensis zone and the lower Campanian Submortoniceras tequesquitense and Menabites delawarensis zones. Cidaris texanus is late Early Campanian elsewhere.

• group of beds-level stratigraphic resolution

Environment/lithology: chalk

Size class: macrofossils

Collected by R.R. Bennett; reposited in the USNM

Primary reference: C. W. Cooke. 1953. American Upper Cretaceous Echinoidea. United States Geological Survey Professional Paper 254-A:1-44 [W. Kiessling/U. Merkel/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 78198: authorized by Wolfgang Kiessling, entered by Uta Merkel on 31.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

Echinoidea
 Cidaroida - Cidaridae
Cidaris texanus Clark 1891 pencil urchin