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 | |
Cidaris texanus Clark 1891 pencil urchin |