Ranquil-Co fossiliferous level 3 (Cretaceous to of Argentina)

Also known as Ranquil-Co

Where: Mendoza, Argentina (36.3° S, 69.6° W: paleocoordinates 38.9° S, 54.8° W)

• coordinate stated in text

When: Loncoche Formation (Malargue Group), Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; fine-grained, medium sandstone and sandstone

• (original in Spanish) Medium-to-fine gray sandstones (feldspathic gravels), solid or cross-stratified, characterized by the development of residual deposits (lag) at the base, with dispersed pelitic clasts, charcoal remains, scarce pelecypods and abundant vertebrate fragments (fishes, amphibians and reptiles), corresponding to the fossiliferous level 3.

Size classes: macrofossils, mesofossils, microfossils

Reposited in the MACN

Collection methods: mechanical

• fossils in MACN, CORD-PZ, IANIGLA-PV

Primary reference: B. J. Gonzalez Riga. 1999. Hallazgo de vertebrados fósiles en la Formación Loncoche, Cretácico Superior de la provincia de Mendoza, Argentina. Ameghiniana 36:401-410 [E. Vlachos/E. Vlachos]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185024: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 06.04.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Euselachii -
Rajiformes indet. Berg 1940 ray
 Teleostei -
 Perciformes -
Percoidei indet. Bleeker 1859 perch-like fish
dentary plates
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825 gar
 Dipnoi - Ceratodontidae
Metaceratodus sp.1 Chapman 1914 lungfish
dentary plates
 Salientia - Leptodactylidae
? Leptodactylidae indet. Stirton 1953 frog
humerus fragment
 Testudinata -
Meiolaniformes indet.2 Sterli and de la Fuente 2013 turtle
almost complete shell and isolated plates
 Theropoda -
Theropoda indet. theropod
 Squamata - Boidae
Boidae indet. Gray 1825 boa
various vertebras
 Plesiosauria -
Plesiosauria indet. plesiosaur
vertebra and teeth