Arroyo Seco, Cerro Guillermo (lower) (Cretaceous to of Argentina)

Also known as Mendozasaurus type site

Where: Mendoza, Argentina (37.1° S, 69.4° W: paleocoordinates 42.4° S, 48.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Sierra Barrosa Formation (Neuquén Group), Middle Coniacian to Middle Coniacian (89.3 - 85.8 Ma)

• Sierra Barrosa Formation based on González Riga et al. (2016)

• bed-level stratigraphic resolution

Environment/lithology: crevasse splay; volcaniclastic, green sandstone and gray, red mudstone

• "overbank deposits associated with sandy fluvial channels developed on a huge muddy flood plain"; specifically a "proximal overbank" facies
• "The fossil-rich level is composed of greenish (10YR 7/2), mica-rich, feldspathic wackes interbedded with mottled red (2.5 YR 4/4) and gray shales."

Size class: macrofossils

Collection methods: quarrying, mechanical,

Primary reference: B. J. González-Riga. 2003. A new titanosaur (Dinosauria, Sauropoda) from the Upper Cretaceous of Mendoza Province, Argentina. Ameghiniana 40(2):155-172 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 35285: authorized by Matthew Carrano, entered by Matthew Carrano on 24.11.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Saurischia - Titanosauridae
Mendozasaurus neguyelap n. gen. n. sp.
Mendozasaurus neguyelap n. gen. n. sp. González-Riga 2003 titanosaurid
IANIGLA-PV 065 - holotype; MNI= 4
 Avetheropoda -
Maniraptora indet. Gauthier 1986 coelurosaur