La Colonia (Cretaceous to of Argentina)

Where: Chubut, Argentina (42.9° S, 67.5° W: paleocoordinates 45.7° S, 53.6° W)

• coordinate stated in text

When: La Colonia Formation, Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• Fossil localities described from "second facies association of the La Colonia Formation.." (Albino, 2000:248). No further stratigraphic data provided.

• bed-level stratigraphic resolution

Environment/lithology: estuary or bay; lithology not reported

• Depositional environment described as "...estuary, tidal flat, or coastal plain environment, influenced both by occasional high fresh water stream flow from the continent and tidal occurrences from the sea..." (Albino, 2000:249).

Size class: macrofossils

Primary reference: A. M. Albino. 2000. New record of snakes from the Cretaceous of Patagonia (Argentina). Geodiversitas 22(2):247-253 [J. Head/J. Head/P. Mannion]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 26749: authorized by Jason Head, entered by Jason Head on 27.10.2002, edited by Jonathan Tennant

Creative Commons license: CC BY (attribution)

Taxonomic list

• Additional taxa listed from second facies include: fishes, turtles, crocodiles, plesiosaurs, dinosaurs, mammals. No additional information is provided.
 Serpentes -
 Squamata - Madtsoiidae
? Madtsoiidae indet. Hoffstetter 1961 snake
Alamitophis argentinus Albino 1986 snake
 Squamata - Boidae
? Boidae indet. Gray 1825 boa
 Sauropterygia - Elasmosauridae
Elasmosauridae indet. Cope 1869 elasmosaur
MPEF s/n, isolated and incomplete cervical and dorsal vertebrae