Where: Coahuila de Zaragoza, Mexico (29.3° N, 101.1° W: paleocoordinates 27.7° N, 61.6° W)
• outcrop-level geographic resolution
When: Indidura Formation, Albian (113.0 - 100.5 Ma)
• STRATIGRAPHIC RELATIONS: From the Indidura Fm, which overlies the Aurora Limestone. AGE: Cenomanian, on the basis of biostratigraphic correlation to better dated Texan lithostratigraphic units, and ammonite biostratigraphy. STRATIGRAPHIC POSITION: From float at the the top of a bluff where limestone is in thin platy layers that form a more continuous outcrop than the underlying strata.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, gray limestone
Size class: macrofossils
Preservation: mold/impression
Collected by Kellum in 1941; reposited in the UMMP
Collection methods: surface (float),
• COLLECTOR: L. B. Kellum, 1935. REPOSITORY: UMMP.
Primary reference: L. B. Kellum and W. I. Robinson. 1963. Geology of the west-central part of the Sierra de Tlahualilo, Coahuila, Mexico. Papers of the Michigan Academy of Science, Art, and Letters 48:223-261 [A. Hendy/A. Hendy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 88677: authorized by Austin Hendy, entered by Austin Hendy on 17.04.2009
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
? Watinoceras sp. Warren 1930 ammonite | |
Bivalvia | |
Inoceramus sp. Sowerby 1814 clam | |
Homomya casei clam | |
Brachiopoda | |
Brachiopoda indet. Cuvier 1805 | |
Echinoidea | |
Hemiaster calvani, "Hemiaster bexari" = Hemiaster wetherbyi
Hemiaster calvani heart urchin
"Hemiaster bexari" = Hemiaster wetherbyi de Loriol 1887 heart urchin | |
Holaster nanus sea urchin |