Puesto Perdomo tracksite (Jurassic to of Argentina)

Also known as Arroyo de la Ventana

Where: Río Negro, Argentina (41.7° S, 66.0° W: paleocoordinates 43.1° S, 22.5° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Marifil Volcanic Complex Formation, Hettangian to Hettangian (201.3 - 189.6 Ma)

• from the base of an epiclastic lens within the Marifil Volcanic Complex

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; coarse-grained, quartzose, volcaniclastic, red sandstone

• "The track-bearing slabs come from a flagstone quarry, where a 30 metre-thick succession, dominated by pyroclastic acidic flow deposits with thin volcaniclastic lenses, crops out. These slabs are composed of coarse-grained, light-pinkish sandstone with quartz, k-feldspar and pyroclastic material (i.e., ash and pumice fragments)."

Size class: macrofossils

Preservation: cast

Collected by Perdomo family in the 1950s

Collection methods: salvage, surface (in situ),

• "The four dinosaur track-bearing slabs were found in the 1950’s during the extraction works of flagstone quarry in the Perdomo farm (Díaz-Martínez et al. 2017a,b). They had been part of the floor of a grocery store during decades. After that, they were extracted and returned to the Perdomo farm. In the 2000’s, Mr. Perdomo donated the four slabs to the Museo Regional Provincial de Valcheta, where are currently housed."

Primary reference: I. Díaz-Martínez, S. N. González, and S. De Valais. 2017. Dinosaur footprints in the Early Jurassic of Patagonia (Marifil Volcanic Complex, Argentina): biochronological and palaeobiogeographical inferences. Geological Magazine 154(4):914-922 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 197262: authorized by Graeme Lloyd, entered by Graeme Lloyd on 28.10.2018, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Ornithischia - Moyenisauropodidae
cf. Anomoepus sp.
cf. Anomoepus sp. Hitchcock 1848 ornithopod
MRPV430/P/13 ("cf. Anomoepus") and MRPV427/P/13, 428/P/13, 429/P/13 ("Anomoepus-like")