Gasema, near Cerro Zeballos, LIEB-PV 5514, 5516, 5519, 5520, 5521, 5526, 5544, 5 (Miocene of Argentina)

Also known as Gasema

Where: Chubut, Argentina (42.6° S, 70.3° W: paleocoordinates 43.1° S, 66.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Colloncuran mammal zone, Collon Cura Formation, Middle Miocene (16.0 - 11.6 Ma)

• In general terms, in the area of study the Collón Curá Formation (middle Miocene) overlies conformably and unconformably the La Pava (late lower Miocene) Formation and is unconformably overlaid by the Río Negro Formation (Miocene-Pliocene).

Environment/lithology: fluvial-lacustrine; volcaniclastic sandstone

• In this area the Collón Cura Formation is characterized as a sequence with predominance of yellowish, light gray and green tufts, sometimes with intercalations of calcareous sandstones in fine brown benches, banks of gray tufts, friable arcilites, light gray and, to a lesser extent, conglomerate fine, yellow and gray sandstones. The specimens of turtles collected in this locality come from fluvial levels with significant proportions of pyroclastic material and are tentatively correlated with the Lower Section of Bilmes et al. (2014).

Size class: macrofossils

Collection methods: surface (in situ),

• LIEB-PV, Laboratorio de Investigaciones en Evolución y Biodiversidad, Facultad de Ciencias Naturales sede Esquel, Universidad Nacional de la Patagonia “San Juan Bosco”, Esquel, Chubut province, Argentina

Primary reference: C. Oriozabala, J. Sterli, and L. Gonzalez Ruiz. 2018. Morphology of the mid-sized tortoises (Testudines: Testudinidae) from the Middle Miocene of Northwestern Chubut. Ameghiniana 55(1):30-54 [E. Vlachos/E. Vlachos/E. Vlachos]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186561: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 26.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Testudines - Pantestudinidae
Chelonoidis gringorum Simpson 1942 turtle
LIEB-PV 5514, 5516, 5519, 5520, 5521, 5526, 5544, 5545