Vallecillo (Cretaceous of Mexico)

Also known as Vallecillosaurus donrobertoi type locality

Where: Nuevo León, Mexico (26.8° N, 100.1° W: paleocoordinates 28.1° N, 69.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Vallecillo Platy Limestone Member (Agua Nueva Formation), Early/Lower Turonian (93.5 - 89.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified limestone

• Finely bedded marly limestone

Size class: macrofossils

Collected by Universidad Autónoma de Nuevo León

Collection methods: surface (in situ),

Primary reference: K. T. Smith and M.-C. Buchy. 2008. A new aigialosaur (Squamata: Anguimorpha) with soft tissue remains from the Upper Cretaceous of Nuevo León, Mexico. Journal of Vertebrate Paleontology 28(1):85-94 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 115406: authorized by Philip Mannion, entered by Philip Mannion on 01.09.2011, edited by Jonathan Tennant and Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Trionychidae
Trionyx sp.2 Geoffroy Saint-Hilaire 1809 softshell turtle
 Testudines -
"Chelonia indet." = Testudines2
"Chelonia indet." = Testudines2 Batsch 1788 turtle
 Squamata -
Vallecillosaurus donrobertoi n. gen. n. sp. Smith and Buchy 2008 squamates
UANL-FCT-R27 - holotype - posterior half of axial skeleton with much of tail and left pelvic appendage (on the main part), and two partial sections of the tail (broken counterpart)
 Plesiosauria -
cf. Polyptychodon sp.1 Owen 1841 plesiosaur
UANL-FCT-R26, tooth
 Plesiosauria - Polycotylidae
Polycotylidae indet.1 Williston 1908 plesiosaur
nearly complete specimen