PBDB Collection

Cerro Overo [MAU] (Cretaceous of Argentina)

Also known as Cerro Mesa de los Overos

Where: Neuquén, Argentina (37.6° S, 69.3° W: paleocoordinates 42.1° S, 50.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Bajo de la Carpa Formation (Neuquén Group), Santonian (86.3 - 83.6 Ma)

• Locality relocated and attributed to the Bajo de la Carpa Formation (Filippi 2015), rather than the Anacleto Formation, as originally described. Upper third of formation.

• bed-level stratigraphic resolution

Environment/lithology: levee; bioturbated siltstone and massive mudstone

• "The fossiliferous bed is composed of sandy siltstone interbedded with thin massive mudstone levels. The sandy siltstone shows a faint horizontal stratification, associated with an intense bioturbation developed on top of the bed"

Size class: macrofossils

Collected by MCF, LACM, MAU in 2002–2016

Collection methods: surface (in situ),

• MAU-Pv, Paleontología de Vertebrados, Museo Municipal “Argentino Urquiza”, Rincón de los Sauces, Neuquén, Argentina

Primary reference: R. A. Coria, L. S. Filippi, L. M. Chiappe, R. Garcia, and A. B. Arcucci. 2013. Overosaurus paradasorum gen. et sp. nov. , a new sauropod dinosaur (Titanosauria: Lithostrotia) from the Late Cretaceous of Neuquén, Patagonia, Argentina. Zootaxa 3683(4):357-376 [P. Mannion/P. Mannion]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 147178: authorized by Philip Mannion, entered by Philip Mannion on 05.07.2013, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Reptilia
Theropoda - Abelisauridae	Abelisauridae indet.⁴, Brachyrostra indet.³ Abelisauridae indet.⁴ Bonaparte and Novas 1985 ceratosaur MAU-Pv-CO-725, partial skull and endocast Brachyrostra indet.³ Canale et al. 2008 ceratosaur MAU-Pv-CO-598, incomplete middle caudal vertebra
Ornithischia -	aff. Elasmaria indet.¹, Mahuidacursor lipanglef n. gen. n. sp.¹ aff. Elasmaria indet.¹ Calvo et al. 2007 ornithopod MAU-Pv-CO-564 to 580 Mahuidacursor lipanglef n. gen. n. sp.¹ Cruzado-Caballero et al. 2019 ornithopod MAU-Pv-CO-596
Saurischia -	Overosaurus paradasorum n. gen. n. sp. Overosaurus paradasorum n. gen. n. sp. Coria et al. 2013 sauropod MAU-Pv-CO-439 - holotype (last four cervical vertebrae, ten dorsal vertebrae, six sacral vertebrae, and twenty caudal vertebrae, the ribs of the last three cervical vertebrae, six right dorsal ribs [dorsal vertebrae 2–5, 8, 9], five left dorsal ribs [dorsal vertebrae 2–5 and 8]; proximal ends of dorsal ribs of both sides of dorsal vertebrae 9 and 10, the complete right ilium and fragments of the left ilium)
Loricata - Peirosauridae	Kinesuchus overoi n. gen. n. sp.² Kinesuchus overoi n. gen. n. sp.² Filippi et al. 2018 crocodilian MAU-Pv-CO-583 - holotype (mandibles)

¹Cruzado-Caballero et al. 2019; ²Filippi et al. 2018; ³Gianechini et al. 2022; ⁴Paulina Carabajal et al. 2023