Quebrada Peñas Blancas (Miocene of Argentina)

Also known as Valle Calchaquí

Where: Salta, Argentina (25.8° S, 66.2° W: paleocoordinates 26.0° S, 64.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Huayquerian mammal zone, Palo Pintado Formation, Late/Upper Miocene (11.6 - 5.3 Ma)

• The new fossil material comes from about 410 m above the base of this unit, close to a left tributary of the Calchaquí River

•deposited between 10.29 ± 0.11 Ma (K/Ar) to 5.27 ± 0.28 Ma (206 P b/238U; Coutand et al., 2006; Carrapa et al., 2006; Galli et al., 2008, 2014).

• bed-level stratigraphic resolution

Environment/lithology: fluvial; fine-grained, sandy sandstone

• The fluvial system interpreted for this unit is intermediate between fluvial braided (with low sinuosity and simple channels) and meandering rivers (with high sinuosity and multiple channels)
• S.Sal.Scar.Paleo.2012-045 was found in situ in the sandy facies of the bearing horizon and the adhering matrix is a fine sandstone which was deposited by large subaqueous dunes in fast-flowing confined channels

Size class: macrofossils

Collected in 2010

• Museum of San Carlos, Salta province, Argentina

Primary reference: M. A. Reguero, A. M. Candela, C. I. Galli, R. Bonini, and D. Voglino. 2015. A new hypsodont notoungulate (Hegetotheriidae, Pachyrukhinae) from the late Miocene of the Eastern Cordillera, Salta province, northwest of Argentina. Andean Geology 42(1):56-70 [C. Jaramillo/J. Carrillo]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 192105: authorized by Carlos Jaramillo, entered by Juan Carrillo on 09.03.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Notoungulata - Hegetotheriidae
Paedotherium kakai n. sp.
Paedotherium kakai n. sp. Reguero et al. 2015 notoungulate
S.Sal.Scar.Paleo.2012-045