Cocholgüe (cf. Plotosaurus) (Cretaceous of Chile)

Where: Concepcion Bay, Chile (36.6° S, 73.0° W: paleocoordinates 38.6° S, 60.9° W)

• coordinate estimated from map

When: Quiriquina Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• Beds with calcareous sandstone concretions, roughly equivalent to Kitchinites darwini subzone

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

• The mosasaur mandible described here from Cocholgüe is preserved in a limestone concretion which must come from this lithostratigraphic unit, although the precise stratigraphic level within the unit is not known

Size class: macrofossils

• The mosasaur specimen comprises the fragments of two disarticulated mandibular rami and

•fragments of bones likely also coming from the mandible.

Collection methods: quarrying, mechanical,

• Repository: CPUC (Colección Paleontológica de la Universidad de Concepción)

Primary reference: E. Frey, E. W. A. Mulder, W. Stinnesbeck, C. Salazar, and L. A. H. Quinzio-Sinn. 2016. A mosasaur, cf. Plotosaurus, from the upper Maastrichtian Quiriquina Formation in Central Chile. Cretaceous Research 61:17-25 [E. Vlachos/F. Aspromonte]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 232236: authorized by Evangelos Vlachos, entered by Franco Aspromonte on 02.11.2023

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Squamata - Mosasauridae
cf. Plotosaurus sp.
cf. Plotosaurus sp. Camp 1951 mosasaur
CPUC/Q/3150, two disarticulated mandibular rami and fragments of bones likely also coming from the mandible