PBDB Collection

Cañadón Blanco (Oligocene of Argentina)

Also known as Cerro Blanco

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

• coordinate estimated from map

• small collection-level geographic resolution

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

• Likely pertains to Tinguirirican SALMA

Environment/lithology: terrestrial; lithology not reported

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

Show authors, comments, and common names

Mammalia
Cingulata - Dasypodidae	"Meteutatus rigidus" = Barrancatatus rigidus¹, Meteutatus aff. lagenaformis¹ "Meteutatus rigidus" = Barrancatatus rigidus¹ Ameghino 1902 armadillo Meteutatus aff. lagenaformis¹ Ameghino 1897 armadillo
Panameriungulata - Proterotheriidae	Anisolambda nodulosa n. sp.⁶ Anisolambda nodulosa n. sp.⁶ Roth 1904 placental Type, isolated m2 (see also ref 10312)
Notoungulata -	Orthogenium ameghinoi n. gen. n. sp.⁷, Pyramidon klaatschi n. gen. n. sp.⁷ Orthogenium ameghinoi n. gen. n. sp.⁷ Roth 1902 notoungulate Pyramidon klaatschi n. gen. n. sp.⁷ Roth 1902 notoungulate
Notoungulata - Interatheriidae	"Eopachyrucos pliciferus n. sp." = Eopachyrucos pliciformis, Santiagorothia chiliensis⁵ "Eopachyrucos pliciferus n. sp." = Eopachyrucos pliciformis Simpson 1967 notoungulate MLP 12-1529 Santiagorothia chiliensis⁵ Hitz et al. 2000 notoungulate
Notoungulata - Archaeohyracidae	Protarchaeohyrax gracilis n. gen.⁴, Protarchaeohyrax minor n. sp.⁴, Archaeotypotherium propheticus² Protarchaeohyrax gracilis n. gen.⁴ Roth 1904 notoungulate MLP 12-1522 (holotype) and MLP 12-1518 (probably from same individual) (see also ref 10312) Protarchaeohyrax minor n. sp.⁴ Reguero et al. 2003 notoungulate MLP 52-XI-4-168a (holotype) Archaeotypotherium propheticus² Ameghino 1897 notoungulate MLP 12-1524a (holotype) (see also ref 10497)
Notoungulata -	"Eomorphippus obscurus" = Eomorphippus obscurus⁷, "Lonkus rugei n. gen. n. sp." = Eomorphippus obscurus⁷, "Eurystomus stehlini n. gen. n. sp." = Eomorphippus obscurus⁷ "Eomorphippus obscurus" = Eomorphippus obscurus⁷ 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 obscurus⁷ Ameghino 1901 notoungulate MLP 12-1515, dentary p2-3 "Eurystomus stehlini n. gen. n. sp." = Eomorphippus obscurus⁷ Ameghino 1901 notoungulate MLP 12-1508, type, associated upper and lower dentitions
Polydolopimorphia - Polydolopidae	"Polydolops mayoi" = Kramadolops mayoi³ "Polydolops mayoi" = Kramadolops mayoi³ Odreman Rivas 1978 metatherian MLP 52-XI-4-176

¹Carlini et al. 2009; ²Croft et al. 2003; ³Marshall 1982; ⁴Reguero et al. 2003; ⁵Reguero and Prevosti 2010; ⁶Roth 1904; ⁷Simpson 1967