Where: Nuevo León, Mexico (25.6° N, 100.5° W: paleocoordinates 24.1° N, 54.8° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Dufrenoyia justinae ammonoid zone, La Peña Formation, Early/Lower Aptian (121.4 - 122.5 Ma)
• Dufrenoyia scotti/Burckhardtites nazasensis subzone
• bed-level stratigraphic resolution
Environment/lithology: offshore; lithified lime mudstone
Size class: macrofossils
Collection methods: Repository: Museo María del Carmen Perrilliat M., Colección Nacional de Paleontología, Instituto de Geología, UNAM, Ciudad de Mexico, Mexico
Primary reference: R. Barragán, J. A. Moreno-Bedmar, F. Núñez-Useche, L. F. Álvarez-Sánchez, and G. Delanoy. 2021. Ammonite biostratigraphy of two stratigraphic sections of the La Peña Formation (Aptian, Lower Cretaceous) in Nuevo León State, northeast Mexico. Cretaceous Research 125(104862) [M. Clapham/M. Clapham]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 220690: authorized by Matthew Clapham, entered by Matthew Clapham on 12.06.2021
Creative Commons license: CC BY (attribution)
Taxonomic list
| Cephalopoda | |
|
"Gargasiceras" adkinsi ammonite
Colombiceras sp. Spath 1923 ammonite | |
|
Cheloniceras sp. Hyatt 1903 ammonite | |
|
Huastecoceras trispinosoides Burckhardt 1925 ammonite | |
|
Hamiticeras sp. Anderson 1938 ammonite | |
|
Dufrenoyia scotti ammonite
Dufrenoyia sp. Kilian and Reboul 1915 ammonite | |
|
Burckhardtites nazasensis Burckhardt 1925 ammonite | |