Loma Sola quarry tracksite (Triassic of Argentina)

Where: Mendoza, Argentina (32.4° S, 68.9° W: paleocoordinates 52.3° S, 39.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Cerro de Las Cabras Formation (Uspallata Group), Ladinian (242.0 - 237.0 Ma)

• uppermost part of formation, 4 track-bearing layers

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - small; white, yellow, muddy sandstone

• "the trace fossil assemblage reflects a composite ichnofacies (sensu Melchor et al., 2012) or an overprinting of subaerially exposed substrates (Skolithos isp. and tetrapod tracks) on shallow lacustrine conditions"
• "yellowish-white marly sandstone...The track-bearing surfaces are smooth with occasional desiccation cracks, and are developed on very fine-grained marly sandstone covered with a mud drape, which contain sparse invertebrate traces, wrinkle structures and palimpsest ripples"

Size class: macrofossils

Preservation: cast, mold/impression, trace

Collected in 2001, 2004

Collection methods: surface (in situ),

Primary reference: A. Lagnaoui, R. N. Melchor, E. S. Bellosi, P. M. Villegas, N. Espinoza and A. M. Umazano. 2019. Middle Triassic Pentasauropus-dominated ichnofauna from western T Gondwana: Ichnotaxonomy, palaeoenvironment, biostratigraphy and palaeobiogeography. Palaeogeography, Palaeoclimatology, Palaeoecology 524:40-61 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 219953: authorized by Matthew Carrano, entered by Matthew Carrano on 27.04.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
cf. Dendroichnites sp.
Reptilia
 Pseudosuchia - Chirotheriidae
Chirotheriidae indet., Chirotherium barthii, Chirotherium cf. rex, Isochirotherium cf. coureli
Chirotheriidae indet. Abel 1935 archosaur
Chirotherium barthii Kaup 1835 archosaur
print on slab A
Chirotherium cf. rex Peabody 1948 archosaur
Isochirotherium cf. coureli Demathieu 1970 archosaur
GHUNLPam 26930
Osteichthyes
 Therapsida -
cf. Dicynodontipus sp.
cf. Dicynodontipus sp. Rühle von Lilienstern 1944 therapsid
 Dicynodontia -
Pentasauropus argentinae n. sp.
Pentasauropus argentinae n. sp. Lagnaoui et al. 2019 dicynodont
trackways A1, B1
Helminthoidichnites
  -
Helminthoidichnites tenuis
 Ichnofossils -
Palaeophycus sp., Helminthopsis sp., Skolithos sp., Treptichnus pollardi
Palaeophycus sp. Hall 1847
Helminthopsis sp. Heer 1877
Skolithos sp. Haldemann 1840