Where: Coahuila de Zaragoza, Mexico (29.0° N, 101.0° W: paleocoordinates 28.4° N, 66.7° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Del Rio Clay Formation, Early/Lower Cenomanian (99.6 - 93.5 Ma)
• STRATIGRAPHIC RELATIONS: From the Del Rio Clay, for which lithostratigraphic relations are not clearly stated. AGE: Late Albain; on the basis of ammonite biostratigraphy; Stoliczkaia dispar zone; ID of Stoliczkaia dispar is incorrect; actually Early Cenomanian. STRATIGRAPHIC POSITION: From the Del Rio Clay.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, black, gray, blue marl
Size class: macrofossils
Preservation: mold/impression
Collected by Bose; reposited in the UCMP
Collection methods: surface (in situ),
• COLLECTOR: Not stated, but presumably E. Böse. REPOSITORY: University of California, Berkeley.
Primary reference: E. Böse. 1928. Cretaceous ammonites from Texas and northern Mexico. University of Texas Bulletin 2748:143-357 [A. Hendy/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 88218: authorized by Austin Hendy, entered by Austin Hendy on 04.04.2009, edited by Matthew Clapham
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
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Cephalopoda | |
"Turrilites brazoensis" = Mariella (Plesioturrilites) brazoensis
"Turrilites brazoensis" = Mariella (Plesioturrilites) brazoensis Roemer 1849 ammonite | |
"Engonoceras bravoense" = Metengonoceras bravoense
"Engonoceras bravoense" = Metengonoceras bravoense Böse 1928 ammonite | |
"Mantelliceras brazoense" = Graysonites wacoense
"Mantelliceras brazoense" = Graysonites wacoense Böse 1928 ammonite | |
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Bivalvia | |
"Vola subalpina" = Pecten (Vola)1
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