Cañadón Blanco, Chubut, Argentina (Oligocene of Argentina)

Where: Chubut, Argentina (44.5° S, 68.5° W: paleocoordinates 46.3° S, 59.9° W)

• coordinate estimated from map

When: Early/Lower Oligocene (33.9 - 28.4 Ma)

• Likely pertains to Tinguirirican SALMA

Environment/lithology: terrestrial

Size class: macrofossils

Reposited in the MLP

• Collected by Santiago Roth, this locality has never been relocated. It was thought to represent a mixed Mustersan-Deseadan fauna, but has subsequently been shown to pertain primarily to the recently described Tinguirirican SALMA (with perhaps some mixing of older taxa).

Primary reference: R. Hitz, M. Reguero, A. R. Wyss and J. J. Flynn. 2000. New interatheriines (Interatheriidae, Notoungulata) from the Paleogene of Central Chile and Southern Argentina. Fieldiana: Geology (New Series) 42:1-26 [D. Croft/D. Croft/D. Croft]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38653: authorized by Darin Croft, entered by Darin Croft on 27.04.2004, edited by Jelle Zijlstra and Philip Mannion

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Notoungulata - Notohippidae
"Eomorphippus obscurus" = Eomorphippus obscurus6, "Lonkus rugei n. gen. n. sp." = Eomorphippus obscurus6, "Eurystomus stehlini n. gen. n. sp." = Eomorphippus obscurus6
"Eomorphippus obscurus" = Eomorphippus obscurus6 Ameghino 1901 notoungulate
MLP 12-1512, dentary p4-m3; MLP 12-1519, dentary m2-3; MLP 12-1523, dentary m2; MLP 12-1520, dentary m3; MLP 12-1523, dentary m2-3; MLP 12-1536, I2 and I3; MLP 12-1538, isolated m3s; MLP, uncatalogued, dentary m1-3
"Lonkus rugei n. gen. n. sp." = Eomorphippus obscurus6 Ameghino 1901 notoungulate
MLP 12-1515, dentary p2-3
"Eurystomus stehlini n. gen. n. sp." = Eomorphippus obscurus6 Ameghino 1901 notoungulate
MLP 12-1508, type, associated upper and lower dentitions
 Notoungulata - Notostylopidae
"Orthogenium ameghinoi n. gen. n. sp." = Orthogeniops ameghinoi6
"Orthogenium ameghinoi n. gen. n. sp." = Orthogeniops ameghinoi6 Roth 1901 notoungulate
 Notoungulata - Archaeohyracidae
Protarchaeohyrax minor n. sp.4, "Archaeotypotherium propheticus" = Archaeohyrax propheticus2, "Protarchaeohyrax gracilis n. gen." = Bryanpattersonia sulcidens4
Protarchaeohyrax minor n. sp.4 Reguero et al. 2003 notoungulate
MLP 52-XI-4-168a (holotype)
"Archaeotypotherium propheticus" = Archaeohyrax propheticus2 Ameghino 1897 notoungulate
MLP 12-1524a (holotype)
"Protarchaeohyrax gracilis n. gen." = Bryanpattersonia sulcidens4 Ameghino 1902 notoungulate
MLP 12-1522 (holotype) and MLP 12-1518 (probably from same individual)
 Notoungulata - Interatheriidae
Santiagorothia chiliensis5 Hitz et al. 2000 notoungulate
Eopachyrucos pliciferus n. sp. Ameghino 1901 notoungulate
MLP 12-1529
 Notoungulata -
Pyramidon klaatschi n. gen. n. sp.6
Pyramidon klaatschi n. gen. n. sp.6 Roth 1902 notoungulate
 Xenarthra - Dasypodidae
"Meteutatus rigidus" = Barrancatatus rigidus1 Ameghino 1902 armadillo
Meteutatus aff. lagenaformis1 Ameghino 1897 armadillo
 Litopterna - Proterotheriidae
Anisolambda nodulosa n. sp.6 Roth 1904 eutherian
Type, isolated m2
 Polydolopimorphia - Polydolopidae
"Polydolops mayoi" = Kramadolops mayoi3
"Polydolops mayoi" = Kramadolops mayoi3 Odreman Rivas 1978 metatherian
MLP 52-XI-4-176