Monton-ilo tracksite (Cretaceous to of Argentina)

Also known as Ingeniero Jacobacci, Leonardi locality 22, Montonilo

Where: Río Negro, Argentina (41.3° S, 69.5° W: paleocoordinates 43.9° S, 55.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Angostura Colorada Formation, Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: "floodplain"; coarse-grained, red, yellow sandstone

• "flood plain, not very far from the source; or...from the sea-coast."
• "yellowish-pink coarse sandstone, with footprint on the lower surface and ripple marks, 12 cm from the edges of the upper surface."

Size class: macrofossils

Preservation: mold/impression

Collected by R. M. Casamiquela in 1978

Collection methods: surface (in situ),

• discovered by R. M. Casamiquela on the Ligabue Expedition of 1978

Primary reference: R. Casamiquela. 1987. Novedades en ichnologia de vertebrados en la Argentina. Anais do X Congreso Brasileiro de Paleontologia 1:445-456 [J. Hunter/J. Hunter/J. Hunter]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 13308: authorized by John Hunter, entered by John Hunter on 20.02.2002, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

• avian footprints
Reptilia
 Ornithischia - Hadrosauridae
Tridigitichnus inopinatus n. gen. n. sp. Casamiquela 1994 hadrosaurid
footprint; CICRN 15-IV-78-1
Aves
  -
Patagonichnornis venetiorum n. gen. n. sp. Casamiquela 1987 bird
CICRN 15-IV-78-1