Valle Pintado, Ischigualasto (Triassic of Argentina)

Also known as Panphagia type

Where: San Juan, Argentina (30.1° S, 67.9° W: paleocoordinates 46.8° S, 33.3° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Scaphonyx-Exaeretodon-Herrerasaurus other zone, La Peña Member (Ischigualasto Formation), Carnian (237.0 - 228.0 Ma)

• 40 m above base of formation; approx same level as ash dated at 228.3 Ma; upper part of member, lower portion of Panphagia type, lower portion of Scaphonyx-Exaeretodon-Herrerasaurus biozone; late Carnian

•Wallace et al. 2019: The new specimen was found at the Valle Pintado locality, which is located in the upper lev- els of the La Peña Member and in the lower portion of the Scaphonyx-Exaeretodon-Herrera- saurus biozone. The material was found in a fossiliferous layer 40 m above the base of the Formation. Interlayered volcanic ash layers above the base and below the top of the formation provide chronostratigraphic control and yielded ages of 231.4 ± 0.3 Ma and 225.9 ± 0.9 Ma [55,56].

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; fine-grained, concretionary, gray, green, calcareous sandstone and conglomerate

• Wallace et al. 2019: The La Peña Member consists of multistory channel sandstones and conglomerates covered by poorly-drained floodplain mudstones.
• "The red-brown-colored bones were embedded in a grey-green fine-grained sandstone matrix with calcareous cement. Several pieces were encased in light-grey calcareous concretion."

Size class: macrofossils

Collected in 2006

Collection methods: quarrying, surface (in situ),

• collected during 2006 field season, Museo de Ciencias Naturales of San Juan

•Wallace et al. 2019: (PVSJ 882) was found in 2006 by RNM during a field trip to the Ischigualasto Formation carried out by the Instituto y Museo de Ciencias Naturales of the Universidad Nacional de San Juan.

Primary reference: R. N. Martínez and O. A. Alcober. 2009. A basal sauropodomorph (Dinosauria: Saurischia) from the Ischigualasto Formation (Triassic, Carnian) and the early evolution of Sauropodomorpha. PLoS ONE 4(2 (e4397)):1-12 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 87090: authorized by Matthew Carrano, entered by Matthew Carrano on 03.03.2009, edited by Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Dinosauromorpha - Lagerpetonidae
"Lagerpetidae indet." = Lagerpetonidae1
"Lagerpetidae indet." = Lagerpetonidae1 Arcucci 1986 ornithodiran
PVSJ 883
 Saurischia - Guaibasauridae
Panphagia protos n. gen. n. sp.
Panphagia protos n. gen. n. sp. Martínez and Alcober 2009 saurischian
PVSJ 874
Osteichthyes
 Therapsida -
Eucynodontia indet.1 Kemp 1982 therapsid
Pseudotherium argentinus n. gen. n. sp.2 Wallace et al. 2019 therapsid
PVSJ 882 (holotype)