Paso del Sapo, Cerro Azul (Cretaceous of Argentina)

Also known as Between Paso del Sapo y Cerro Condor

Where: Chubut, Argentina (43.1° S, 69.2° W: paleocoordinates 45.3° S, 57.7° W)

• coordinate stated in text

• outcrop-level geographic resolution

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

• "from the same level or very close"

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine; lithology not reported

• As the fossils were collected rapidly, we do not know exactly their provenance or the exact lithology. But as the fossiliferous area is small it is highly probable that the fossils come from the same level.

Size classes: macrofossils, mesofossils

Collected by MPEF & University of South Wales in 1996; reposited in the MEF

Collection methods: surface (float), surface (in situ), mechanical,

Primary reference: S. Apesteguia and A. Cambiaso. 1999. Hallazgo de hadrosaurios en la Formación Paso del Sapo (Campaniano–Maastrichtiano, Chubut): otra localidad del "Senoniano lacustre" [Discovery of hadrosaurs in the Paso del Sapo Formation (Campanian–Maastrichtian): another locality in the "lacustrine Senonian". XV Jornadas Argentinas de Paleontología de Vertebrados, Resúmenes. Ameghiniana 36(4 (suppl.)):5R [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 191131: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 10.01.2018, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
MPEF-PV 1914–1928. Teeth, vertebrae and limb elements
 Testudines - Chelidae
Chelidae indet. Gray 1825 sideneck turtle
MPEF-PV 1911–1913. Plates
Osteichthyes
 Dipnoi - Ceratodontidae
Ceratodontidae indet. Gill 1872 lungfish
MPEF-PV 1906. Dental plate
 Dipnoi - Ptychoceratodontidae
Ptychoceratodus sp. Jaekel 1926 lungfish
MPEF-PV 1907. Dental plate