PBDB Collection

Entre Ríos (Miocene of Argentina)

Also known as Chiquimil

Where: Catamarca, Argentina (26.8° S, 66.1° W: paleocoordinates 27.0° S, 64.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Andalhuala Formation (Santa Maria Group), Messinian (7.2 - 5.3 Ma)

• The strata carrying the pellets are close to the tuff of the basal levels of this Formation, dated at 7.14 Ma (Butler et al., 1984, Latorre et al., 1997, Bossi et al., 2001).

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; medium-grained sandstone

• Candela 200: paleontological and geological evidence indicates that environmental conditions in the Santa Maria Basin during the late Miocene were more humid than at present, probably characterized by wet-dry seasonality, which allowed the coexistence of forested and open areas

• The Andalhuala Formation extends throughout the valley with an average thickness of 1,200 m. This unit is constituted, mainly, by medium to coarse sandstones and light gray conglomerate sandstones, solid or with crossed stratification, alternating with sandy-yellowish grayish-brown (sometimes reddish), bioturbated, pale-defined paleosols, tabular layers of tuffs white or intraconglomerates of their fragments (Bossi et al., 1999).

Size class: mesofossils

Collection methods: Candela, 2004: MNH 92-1-1 is housed within Museo de Monte Hermoso, Argentina.

•

•Vezzosi 2012: MUCyFA-456 is housed at Museo Universitario Carlos y Florentino Ameghino and PVL-4918 at Instituto Miguel Lillo Paleontologı ́ a de Vertebrados

Primary reference: N. L. Nasif, G. I. Esteban, and P. E. Ortiz. 2009. Novedoso hallazgo de egagrópilas en el Mioceno tardío, Formación Andalhuala, provincia de Catamarca, Argentina. Serie correlación geológica 22(2) [P. Mannion/M. Kouvari]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 198820: authorized by Philip Mannion, entered by Miranta Kouvari on 14.01.2019, edited by Grace Varnham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Aves
Gruiformes - Phorusrhacidae	Procariama simplex⁵ Procariama simplex⁵ Rovereto 1914 terror bird MUCyFA-456, PVL-4918
Mammalia
Didelphimorphia - Didelphidae	Hyperdidelphys pattersoni² Hyperdidelphys pattersoni² Reig 1952 opossum PVC 3316, PVL 3317
Notoungulata - Hegetotheriidae	Tremacyllus incipiens⁴ Tremacyllus incipiens⁴ Rovereto 1914 notoungulate see also itsfirst ref (abstract): Armella et al., 2015
Rodentia - Cricetidae	Sigmodontinae indet. Sigmodontinae indet. Wagner 1843 rodent
Rodentia - Coendidae	Neosteiromys pattoni n. sp.¹ Neosteiromys pattoni n. sp.¹ Candela 2004 rodent MNH 92-1-1 (type)
Rodentia - Octodontidae	Octodontinae indet. Octodontinae indet. Waterhouse 1839 caviomorph
Rodentia - Echimyidae	Eumysopinae indet.³ Eumysopinae indet.³ Rusconi 1935 spiny rat PVL 4824

¹Candela 2004; ²Goin and Pardiñas 1996; ³Nasif 1998; ⁴Sostillo et al. 2018; ⁵Vezzosi 2012