Laguna La Colorada (PVL) (Jurassic of Argentina)

Also known as Estancia Cañadón Largo, Laguna Colorada

Where: Santa Cruz, Argentina (48.1° S, 68.3° W: paleocoordinates 49.7° S, 21.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Laguna Colorada Formation (El Tranquilo Group), Sinemurian (199.3 - 190.8 Ma)

• upper "Coloradian" age

• bed-level stratigraphic resolution

Environment/lithology: pond; nodular, brown, calcareous siltstone

• "a post-rift thermally induced sag basin", setting is "around a floodplain pond under a seasonally warm climate"
• "brown-weathering calcareous siltstone similar to the numerous oblate to spherically-shaped calcareous nodules that occur in the same horizons"

Size class: macrofossils

Preservation: trace

Collected by J. Bonaparte & M. Vince

Collection methods: quarrying, surface (in situ), mechanical,

• severn juvenile dinosaurs near two eggs and presumed nest

Primary reference: J. F. Bonaparte and M. Vince. 1979. El hallazgo del primer nido de dinosaurios triasicos, (Saurischia, Prosauropoda), Triasico Superior de Patagonia, Argentina [The discovery of the first nest of Triassic dinosaurs (Saurischia, Prosauropoda,) from the Upper Triassic of Patagonia, Argentina]. Ameghiniana 16(1-2):173-182 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 52015: authorized by Matthew Carrano, entered by Matthew Carrano on 12.07.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Saurischia -
Mussaurus patagonicus n. gen. n. sp.
Mussaurus patagonicus n. gen. n. sp. Bonaparte and Vince 1979 sauropodomorph
+ 2 eggs; Holotype: PVL 4068, artic. post-hatchling skeleton; PVL 4208, partially artic. post-hatchling skeleton; PVL 4209, partial post-hatchling skull & lower jaw assoc. w/partially artic. postcranium; PVL 4210, almost complete post-hatchling skull assoc. w/postcrania; PVL 4211, incomplete post-hatchling skull, mandible, & disartic. postcrania; PVL 4212, partially articulated post-hatchling elements; PVL 4213, 3 closely assoc. skeletons of post-hatchlings; PVL 4587, 2 different partially artic. juvenile skeletons; PVL 5865, articulated post-hatchling skeleton & almost complete skull; MPM-PV 1813/1, juvenile skull artic. w/cervicodorsal series; MPM-PV 1813/2, isolated juvenile skull; MPM-PV 1813/4, juvenile skull artic. w/cervicodorsal series, scapular girdle, & forelimbs; MPM-PV 1814, incomplete R manus w/artic. distal carpals of adult; MACN-SC 3379, partially artic. adult postcranial remains, w/several cervicodorsal vertebrae, forelimb, & hind limb remains; MLP 61-III- 20-22, adult postcranium, incl. vertebrae & limbs; MLP 61-III-20-23, putative subadult postcranium, w/dorsal vertebrae, sacrum, ilia, ischia, pubis, & frag. forelimb & hind limb; MLP 68-II-27-1, 2 incomplete adult postcrania w/artic. cervical (w/frag. cranial bones assoc.), dorsal & caudal vertebrae, girdles & limbs (specimens A & B)