San Lazaro Anticline4 (Cretaceous of Mexico)
Where: Nuevo Leon, Mexico (25.8° N, 99.6° W: paleocoordinates 22.7° N, 52.6° W)
• coordinate based on political unit
• small collection-level geographic resolution
When: Valanginian (139.8 - 132.9 Ma)
• bed-level stratigraphic resolution
Environment/lithology: limestone
• limestone, fine-grained, blue-grey, faintly laminated, contains ammonites of Valanginian age
Preservation: original calcite
Primary reference: R. W. Imlay. 1937. Lower Neocomian fossils from the Miquihuana region, Mexico. Journal of Paleontology 11(7):552-574 [M. Patzkowsky/K. Layou/J. Alroy]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 2134: authorized by Mark Patzkowsky, entered by Karen Layou on 22.06.1999
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Cephalopoda | |
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"Thurmannites sp." = Thurmanniceras Cossmann 1901 ammonite "sp. A" - originally entered as "Thurmannites sp. A"
Thurmannites angusticostatus Imlay 1937 ammonite
Thurmannites novihispanicus Imlay 1937 ammonite | |