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Antofagasta de la Sierra (Eocene of Argentina)

Where: Catamarca, Argentina (26.1° S, 67.4° W: paleocoordinates 28.1° S, 59.4° W)

• coordinate stated in text

• local area-level geographic resolution

When: Mustersan mammal zone, middle Member (Geste Formation), Late/Upper Eocene (37.2 - 33.9 Ma)

• "The Geste Formation has been traditionally referred to the Mustersan SALMA (Late Eocene), mainly based on biochronological data (Pascual 1983; Alonso et al. 1988; Lopez 1997; Goin et al. 1998), although a Barrancan subage (late Middle Eocene) has been recently proposed from isotopic data and palaeontological studies (del Papa et al. 2010; Powell et al. 2011)." Garcia-Lopez Babot (2015)

• member-level stratigraphic resolution

Environment/lithology: terrestrial; coarse-grained, red sandstone and conglomerate

• The fossil-bearing sediments are composed of red coarse-grained sandstones, with conglomerate intercalations and at least four green-yellowish micaceous sandstone banks, easily noticed on the hill-chain behind the cemetary. In the uppermost part of the sequence, the argillous materials form typical gulches which in some sectors darken the sediments. These outcroppings are here considered as the Geste Formation Middle Member, in agreement with Alonso (1992).

Size classes: macrofossils, mesofossils

Preservation: permineralized

Reposited in the MLP

• MHAS: Museo del Hombre de Antofagasta de la Sierra, Catamarca, Argentina

Primary reference: G. M. López. 1995. Suniodon catamarcensis gen. et sp. nov. y otros Oldfieldthomasiidae (Notoungulata, Typotheria) del Eoceno de Antofagasta de la Sierra, Catamarca, Argentina. Actas, VI Congreso Argentino de Paleontología y Bioestratigrafía, Trelew 167-172 [D. Croft/D. Croft/R. Butler] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41608: authorized by Darin Croft, entered by Darin Croft on 18.07.2004, edited by Philip Mannion, Richard Butler and Jelle Zijlstra

Creative Commons license: CC BY (attribution)