Bajo de Santa Rosa locality (MACN) (Cretaceous to of Argentina)

Also known as Salitral de Santa Rosa, El Matuasto, "Cerro Bonaparte"

Where: Río Negro, Argentina (40.1° S, 66.8° W: paleocoordinates 42.9° S, 52.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Lower Member (Allen Formation), Late/Upper Campanian to Late/Upper Campanian (83.5 - 66.0 Ma)

• lower member of formation; eggs from 4 levels

• group of beds-level stratigraphic resolution

Environment/lithology: fluvial; poorly lithified, fine-grained, yellow sandstone and mudstone

• "a fluvial environment in the basal section"
• "alternated sandstones and mudstones with small lents of conglomerates." "The fossil-bearing bed consists of friable, yellowish, fine-grained clean sandstone enclosed between siltstone layers."

Size classes: macrofossils, mesofossils

Collected in 1990-1994; reposited in the MACN

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

Primary reference: A. Martinelli and A. M. Forasiepi. 2004. Late Cretaceous vertebrates from Bajo de Santa Rosa (Allen Formation), Río Negro province, Argentina, with the description of a new sauropod dinosaur (Titanosauridae). Revista del Museo Argentino de Ciencias Naturales, nuevo serie 6(2):257-305 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 49557: authorized by Matthew Carrano, entered by Matthew Carrano on 19.04.2005, edited by Marc Jones and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes indet. Huxley 1880 cartilaginous fish
 Teleostei -
 Acanthomorphata - Percichthyidae
cf. Percichthyidae indet. Jordan and Eigenman 1890
 Teleostei -
 Siluriformes - Diplomystidae
Diplomystidae indet. Eigenman 1890 catfish
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet. Cuvier 1825 gar
 Dipnoi - Ceratodontidae
Ceratodontidae indet. Gill 1872 lungfish
 Salientia -
 Salientia - Leptodactylidae
Leptodactylidae indet. Stirton 1953 frog
 Salientia - Panpipidae
Kuruleufenia xenopoides4 Gómez 2016 frog
 Testudines - Panchelidae
Chelidae "indet. 1" sideneck turtle
Chelidae "indet. 2" sideneck turtle
Chelidae "indet. 3" sideneck turtle
 Saurischia - Faveoloolithidae
Sphaerovum erbeni Mones 1980 sauropod
 Saurischia - Titanosauridae
 Saurischia - Saltasauridae
Bonatitan reigi n. gen. n. sp.
Bonatitan reigi n. gen. n. sp. Martinelli and Forasiepi 2004 saltasaurine
 Saurischia -
Tetanurae indet.3 Gauthier 1986 tetanuran
 Avetheropoda - Dromaeosauridae
Austroraptor cabazai n. gen. n. sp.6
Austroraptor cabazai n. gen. n. sp.6 Novas et al. 2008 coelurosaur
 Ornithurae -
cf. Neornithes sp.1 bird
MML 206; left carpometacarpus
 Neornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
 Squamata - Madtsoiidae
Madtsoiidae indet. Hoffstetter 1961 snake
Alamitophis argentinus Albino 1986 snake
Patagoniophis parvus Albino 1986 snake
 Squamata -
Australophis anilioides5 Gómez et al. 2008 southern snake
 Rhynchocephalia - Sphenodontidae
Sphenodontinae indet.2 Cope 1871 rhynchocephalian
 Sauropterygia - Elasmosauridae
Elasmosauridae indet. Cope 1869 elasmosaur