Where: Coahuila, Mexico (25.7° N, 101.3° W: paleocoordinates 31.9° N, 75.8° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Parras Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• Apparently the Saucedas assemblage, even though collected in a condensed sediment unit of <20 m thickness, covers three to four upper Campanian biozones and thus a long interval of time.
• group of beds-level stratigraphic resolution
Environment/lithology: prodelta; lithified, concretionary, gray, silty shale
Size class: macrofossils
Preservation: mold/impression
Collected by C. Ifrim, W. Stinnesbeck in 2008, 2012
Collection methods: surface (float)
• Repository: Colección de Paleontología de Coahuila (CPC) at the Museo del Desierto, Saltillo, Coahuila, Mexico
Primary reference: C. Ifrim, W. Stinnesbeck, B. Espinosa and J. Flores Ventura. 2015. Upper Campanian (Upper Cretaceous) cephalopods from the Parras Shale near Saucedas, Coahuila, Mexico. Journal of South American Earth Sciences 64:229-257 [M. Clapham/M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 174742: authorized by Matthew Clapham, entered by Matthew Clapham on 26.11.2015, edited by J Fearon
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Solenoceras texanum Shumard 1861 ammonite
Solenoceras elegans Kennedy et al. 2000 ammonite
Oxybeloceras crassum Whitfield 1877 ammonite
Diplomoceras cylindraceum Defrance 1816 ammonite | |
Didymoceras donezianum Michailov 1951 ammonite
Nostoceras hyatti Stephenson 1941 ammonite
Exiteloceras jenneyi Whitfield 1877 ammonite
Bostrychoceras polyplocum Roemer 1841 ammonite | |
Baculites "sp. 2" Lamarck 1799 ammonite
Baculites taylorensis Adkins 1929 ammonite | |
Trachyscaphites sp. Cobban and Scott 1964 ammonite | |
Menuites sp. Spath 1922 ammonite | |
Phyllopachyceras forbesianum d'Orbigny 1850 ammonite | |
Eutrephoceras irritilasi Ifrim et al. 2013 nautiloid | |
Malacostraca | |
Prebranchioplax cretacica Vega and Ahyong 2018 crab |