La Colonia (LC 107/23) (Cretaceous of Argentina)

Where: Chubut, Argentina (43.0° S, 67.5° W: paleocoordinates 45.2° S, 55.9° W)

• coordinate based on unpublished field data

When: La Colonia Formation, Maastrichtian (72.1 - 66.0 Ma)

Environment/lithology: terrestrial; siltstone and sandstone

Size class: macrofossils

• Plesiosaur jaw and teeth, lepisosteoid scales and vertebra, and Yaminuechelys-like turtle plates

Collected by Marcos Becerra in 2/18/2023; reposited in the MEF

Collection methods: surface (in situ),

Primary reference: D. Pol, E. Vlachos, and F. Aspromonte. 2023. The end of the dinosaur era in Patagonia (NatGeo Project). [E. Vlachos/E. Vlachos/E. Vlachos]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 231475: authorized by Evangelos Vlachos, entered by Franco Aspromonte on 21.08.2023

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Actinopteri
 Holostei -
Amiiformes indet.
Amiiformes indet. Hay 1929 bowfin
Jaw
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet.
Lepisosteidae indet. Cuvier 1825 gar
Dermal scales and vertebra
 Acanthomorphata -
Percomorpha indet.
Percomorpha indet.
Pharyngeal tooth
Osteichthyes
 Dipnoi -
Dipnoi indet.
Dipnoi indet. Müller 1884 lungfish
Dental plates
Reptilia
 Plesiosauria -
Plesiosauria indet.
Plesiosauria indet. plesiosaur
Jaw and teeth
 Testudines - Chelidae
Chelidae indet., cf. Yaminuechelys indet.
Chelidae indet. Gray 1825 sideneck turtle
Plates
cf. Yaminuechelys indet. de la Fuente et al. 2001 sideneck turtle
Plates