Also known as Rinconada de los Lopez

Where: Chubut, Argentina (44.7° S, 68.4° W: paleocoordinates 46.0° S, 60.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Deseadan (Oligocene, see comments) mammal zone, Sarmiento Formation, Chattian (28.1 - 23.0 Ma)

• This collection record contains multiple levels collectively known as Scarritt Pocket. For the maximum age, we use the oldest dating for this locality (27Ma from Vucetich et al. 2014). For the minimum age, we decide to use the maximum dating of Marshall et al. 1984 (23.4+-1 Ma), because their minimum age (21.0+-1 Ma) now corresponds to a younger SALMA Colhuehuapian based on more recent datings by Dunn et al. 2013. Scarritt Pocket should be restrained in the Deseadan (30–23 Ma based on Dunn et al. 2013).

•To avoid further confusion with the definition of the Deseadan in the PBDB (which extends to the Early Miocene), we changed this record to the Chattian, so that Scarritt Pocket is dated to the Late Oligocene alone.

•Eocene–Oligocene ‘Tobas del Sarmiento’, Sarmiento Group or Sarmiento Formation (Feruglio 1949; Andreis et al. 1975; Spalletti & Mazzoni 1977, 1979; Reguero & Escribano 1996). Regarding the age of Sarmiento formation, absolute dates are lacking for Cabeza Blanca, but Deseadan levels have been dated in other localities such as Salla, Bolivia (29.4–25.65 Ma), Moquegua, Peru (26.25 Ma), and Chubut, Argentina, Gran Barranca (29.4–24.2 Ma) and Scarritt Pocket (27.17 Ma) (Dunn et al. 2013 and references therein; Vucetich et al. 2014).

• group of beds-level stratigraphic resolution

Environment/lithology: crater lake; volcaniclastic conglomerate and volcaniclastic sandstone

Size classes: macrofossils, mesofossils

Preservation: adpression

Reposited in the AMNH

Primary reference: R.G. Chaffee. 1952. The Deseadan vertebrate fauna of the Scarritt Pocket, Patagonia. Bulletin of the American Museum of Natural History 98:505-562 [J. Alroy/J. Wertheim/J. Wertheim]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 49783: authorized by John Alroy, entered by Jill Wertheim on 25.04.2005, edited by Jelle Zijlstra and Philip Mannion

Creative Commons license: CC BY (attribution)