Where: Mexico (29.5° N, 115.3° W: paleocoordinates 33.5° N, 95.3° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Sepultura Formation, Selandian (61.6 - 59.2 Ma)
• Presumably from Sepultura Formation. A few feet below the base of the Tertiary lava beds capping the divide.
• bed-level stratigraphic resolution
Environment/lithology: marine; lithified, fine-grained, concretionary, gray, calcareous sandstone
Size class: macrofossils
Collected by W.P. Popenoe; reposited in the LACM
• Repository: formerly UCLA
Primary reference: A. K. Miller and H. R. Downs. 1950. Tertiary nautiloids of the Americas: supplement. Journal of Paleontology 24:1-18 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 180402: authorized by Matthew Clapham, entered by Matthew Clapham on 15.07.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Hercoglossa popenoei n. sp.
Hercoglossa popenoei n. sp. Miller and Downs 1950 nautiloid |