Rocas Bayas, Río Negro, Argentina (Oligocene of Argentina)

Where: Rio Negro, Argentina (41.0° S, 69.0° W: paleocoordinates 42.8° S, 60.7° W)

• coordinate based on political unit

• local area-level geographic resolution

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

• Likely Tinguirirican in age.

Environment/lithology: terrestrial

Size classes: macrofossils, mesofossils

Preservation: permineralized

Reposited in the MLP

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 38651: 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 - Archaeohyracidae
Archaeohyrax patagonicus2 Ameghino 1897 notoungulate
MLP 83-I-12-4, maxillary with broken P4 and M1-3
 Notoungulata - Interatheriidae
Santiagorothia chiliensis Hitz et al. 2000 notoungulate
MLP 91-IX-5-15, 83-I-12-1, 91-IX-5-14a, 91-IX-5-14b
Eopachyrucos pliciferus Ameghino 1901 notoungulate
MLP 91-IX-5-17
 Xenarthra - Dasypodidae
"Meteutatus rigidus" = Barrancatatus rigidus1
"Meteutatus rigidus" = Barrancatatus rigidus1 Ameghino 1902 armadillo