PBDB Collection

San Luis Potosi, riverbed Arroyo de la Atarjea (Cretaceous of Mexico)

Where: Mexico (22.1° N, 101.0° W: paleocoordinates 28.6° N, 81.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cardenas Formation, Maastrichtian (72.1 - 66.0 Ma)

• The Upper Cretaceous Cardenas Formation is a mixed clastic/

•carbonate sequence, and is best exposed north of the city of Cardenas

•in east-central Mexico (state San Luis Potosı´) (Fig. 1). Tectonically,

•the Cardenas Formation is part of the fold and thrust

•belt of the Sierra Madre Oriental. The section is exposed in a riverbed called Arroyo de la Atarjea, which is located approximately 2 km north of Cardenas

•The section is 1,200 m thick. The Tabaco Formation overlie the Cardenas Formation.

Environment/lithology: shallow subtidal; sandstone and poorly lithified siltstone

• The Upper Cretaceous Cardenas Formation is a mixed clastic/

•carbonate sequence, and is best exposed north of the city of Cardenas

•in east-central Mexico (state San Luis Potosı´) (Fig. 1). Tectonically,

•the Cardenas Formation is part of the fold and thrust

•belt of the Sierra Madre Oriental. The section is exposed in a riverbed called Arroyo de la Atarjea, which is located approximately 2 km north of Cardenas

•The section is 1,200 m thick. The Tabaco Formation overlie the Cardenas Formation.

• Lithologies consist of marls, siltstones, and arenites, as well as sparse

•conglomerates. In addition, the upper and lower members are

•characterized by carbonate intervals, which bear rudist assemblages

•in the lower member and rudist-dominated, mixed coralrudist

•and coral-dominated assemblages in the upper member

Size class: macrofossils

Primary reference: R. C. Baron-Szabo, A. Schafhauser, S. Götz and W. Stinnesbeck. 2006. Scleractinian corals from the Cardenas Formation (Maastrichtian), San Luis Potosi, Mexico. Journal of Paleontology 80(6):1033-1046 [W. Kiessling/M. Krause]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 138913: authorized by Wolfgang Kiessling, entered by Mihaela Krause on 02.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Anthozoa
Scleractinia - Merulinidae	Dictuophyllia conferticostata, Antiguastrea cellulosa, Cladocora cracilis, Cladocora jamaicaensis Dictuophyllia conferticostata Vaughan 1899 stony coral Antiguastrea cellulosa Duncan 1863 stony coral Cladocora cracilis stony coral Cladocora jamaicaensis Vaughan 1899 stony coral
Scleractinia - Placocoeniidae	Placocoenia major Placocoenia major Felix 1903 stony coral
Scleractinia - Agatheliidae	Multicolumnastraea cyathiformis Multicolumnastraea cyathiformis Duncan 1865 stony coral
Scleractinia - Brachyphylliidae	Dermosmiliopsis orbignyi Dermosmiliopsis orbignyi Alloiteau 1952 stony coral
Scleractinia - Haplaraeidae	Meandrophyllia oceani Meandrophyllia oceani de Fromentel 1877 stony coral
Scleractinia - Siderastreidae	Siderastrea adkinsi, Siderastrea vancouverensis Siderastrea adkinsi Wells 1934 stony coral Siderastrea vancouverensis Clark and Arnold 1923 stony coral
Scleractinia - Agariciidae	Cyathoseris formosa, Trochoseris aperta Cyathoseris formosa d'Achiardi 1875 stony coral Trochoseris aperta Duncan 1864 stony coral
Scleractinia - Poritidae	Goniopora sp. Goniopora sp. Blainville 1830 stony coral
Scleractinia - Actinacididae	Actinacis haueri, "Actinacis parvistella" = Actinacis martiniana, Actinhelia elegans Actinacis haueri Reuss 1854 stony coral "Actinacis parvistella" = Actinacis martiniana d’Orbigny 1850 stony coral Actinhelia elegans Goldfuss 1826 stony coral