Arazati km 95.750 (Pliocene to of Uruguay)

Where: San José, Uruguay (34.6° S, 57.0° W: paleocoordinates 34.6° S, 56.2° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Raigón Formation, Pliocene to Pliocene (5.3 - 0.1 Ma)

• Correspondencia con las edades mamífero Huayqueriense terminal- Montehermosense s.l.

•This collection had a Huayquerian - Montehermosan age assigned. However, According to the most recent stratigraphic proposal (Bossi et al., 2009), the Raigón Formation comprises two members: the lower, and certainly the most fossiliferous, San José Member, and the upper, San Bautista Member, which has very few fossils. The lithology and facies analysis of the Formation enable us to propose a deposition in transitional and fluvial environments, with aeolian episodes, which are sometimes predominant (Perea and Martínez, 2004; Bossi et al., 2009).

•This Formation has been traditionally considered a Pliocene unit, but the mammalian content suggests a Pliocene-middle Pleistocene age (Perea et al. 2013). Optically Stimulated Luminescence ages of 373 and 218 ka for the top of the sequence indicate a middle Pleistocene age (Ubilla and Martínez 2016). The sedimentary beds of this unit could have developed under a seasonally humid climate (Tófalo et al. 2009) or arid to semi/arid condition (Bossi et al. 2009; Panario et al. 2014).

Environment/lithology: terrestrial; gray, yellow, sandy siltstone

• En limo arenoso muy bien seleccionado y color gris amarillento a gris oliva suave

Size class: macrofossils

Collected by D. Perea, R. Fariña, M. Ubilla

• Colección del Departamento de Paleontología de la Facultad de Humanidades y Ciencias (FHC-DPV)

Primary reference: D. Perea. 1988. Dos Nothrotheriinae (Tardigrada, Megatheriidae) del Mio-Plioceno de Uruguay. Ameghiniana 25(4):381-288 [C. Jaramillo/J. Carrillo]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 140995: authorized by Carlos Jaramillo, entered by Juan Carrillo on 20.03.2013, edited by Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Mammalia
 Megatherioidea - Nothrotheriidae
"Pronothrotherium mirabilis" = Pronothrotherium mirabilis, "Pronothrotherium figueirasi n. sp." = Pronothrotherium mirabilis
"Pronothrotherium mirabilis" = Pronothrotherium mirabilis Kraglievich 1925 edentate
"Pronothrotherium figueirasi n. sp." = Pronothrotherium mirabilis Kraglievich 1925 edentate
Reptilia
 Testudines - Chelidae
Phrynops sensu lato geoffroanus Schweigger 1812 side-necked turtle of Geoffroy
FCDPV-319, partial shell