Where: Argentina (38.9° S, 62.0° W: paleocoordinates 38.9° S, 62.0° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Lujanian (0.8 - 0.0 Ma)

• Miño-Boilini and Carlini 2009: S. leptocephalum is the best studied species. The materials were found in the late Pleistocene of Punta Alta, Buenos Aires Province (Fig. 2), Argentina (Owen, 1857; Ameghino, 1889; Scillato-Yane ́ et al., 1995). According to Scillato-Yané et al. (1995) and Carlini and Scillato-Yané (1999), this is an exclusive species of the Lujanian s.l., since in these papers the Lujanian s.l. Stage was interpreted as including the Bonaerian þ Lujanian s.st. (ca. 0.4 Ma–8.5 ka BP; see Cione and Tonni, 2005). So far, the most modern record of this species was dated in 7760 ????+/- 120 years 14C (early Holocene), on fragments of post-cranium found in the San Luis Province (Chiesa et al., 1999).

• formation-level stratigraphic resolution

Environment/lithology: terrestrial; conglomerate

Size classes: macrofossils, mesofossils

Collected by Darwin in 1832-1833

• Visited by Darwin during the HMS Beagle voyage in 23 Sep - 16 Oct 1832 and 29-31 Aug 1833

Primary reference: J. C. Fernicola, S. F. Vizcaino, and G. De Iuliis. 2009. The fossil mammals collected by Charles Darwin in South America during his travels on board the HMS Beagle. Revista de la Asociación Geológica Argentina 64(1):147-159 [P. Mannion/M. Kouvari]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 204208: authorized by Philip Mannion, entered by Miranta Kouvari on 03.09.2019, edited by Philip Mannion and Grace Varnham

Creative Commons license: CC BY (attribution)