Laguna La Paraguaya: Huayquerian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Mammalia
Mammalia - Notoungulata
Paedotherium minor Cabrera 1937
Mammalia - Notoungulata - Mesotheriidae
Mammalia - Carnivora - Procyonidae
Hontecillas et al. 2023 1 specimen
MHG-P 126/42, skull with left I1-I3, C, P2-M2; right I1, I3, C, P1-M2. Right hemimandible with i3, c, p1, p3-m2
Mammalia - Panameriungulata - Proterotheriidae
Schmidt et al. 2022
MHG-P 126-35, associated right p4, m1, m2 and m3, more or less incomplete
Mammalia - Panameriungulata - Macraucheniidae
Macraucheniinae indet. (Gervais 1855)
Schmidt et al. 2022
Mammalia - Cingulata - Dasypodidae
Doellotatus sp. Bordas 1932
Mammalia - Cingulata
Eosclerocalyptus sp. Ameghino 1919
Mammalia - Cingulata - Glyptodontidae
Glyptodontidae indet. Burmeister 1879
see common names

Geography
Country:Argentina State/province:Buenos Aires
Coordinates: 37.1° South, 62.8° West (view map)
Paleocoordinates:36.8° South, 61.1° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period: Neogene
10 m.y. bin: Cenozoic 6
Key time interval: Huayquerian
Age range of interval: 8 - 5 m.y. ago
Stratigraphy
Formation:Cerro Azul
Stratigraphic resolution:group of beds
Stratigraphy comments: The Cerro Azul Formation outcrops are located in the north-western, central, and eastern part of La Pampa province and adjacent western Buenos Aires province, Argentina (Linares, Llambías & Latorre, 1980; Folguera & Zárate, 2009; Visconti et al., 2010). The unit is characterized by a monotonous succession of loess containing moderately developed paleosols (Fig. 4) that has been assigned to the late Miocene (Huayquerian Land Mammal age) essentially on the basis of its mammal remains (Montalvo & Casadío, 1988; Verzi, Montalvo & Vucetich, 1999; Verzi, Montalvo & Tiranti, 2003). In particular, the formation is considered as representing the interval between 10 and 5.7 Ma (Cione et al., 2000; Verzi, Montalvo & Deschamps, 2008)
Lithology and environment
Primary lithology:burrows muddy siltstone
Lithology description: The maximum exposed thickness in outcrop is 54 m, although the unit reaches about 180 m in the subsurface (Visconti et al., 2010). The formation is essentially composed of structureless, light brown (5YR 6/4), pale reddish brown (10R 5/4) or grayish orange pink (5YR 7/2), sandy siltstones and fine-grained sandstones, showing moderate selection and common carbonate cementation
Environment:terrestrial indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection excludes:ichnofossils
Reason for describing collection:taphonomic analysis
Collection method comments: Fossil material collected in burrows from Laguna La Paraguaya locality (Buenos Aires province) are housed at the Museo Histórico Regional de Guaminí ‘‘Coronel Marcelino E. Freyre’’ under the acronym MHG-P
Field work was approved by the Dirección Provincial de Museos y Preservación Patrimonial, under the Project ‘‘Vertebrados del Mioceno tardío-Plioceno en el área de las lagunas encadenadas del oeste de la provincia de Buenos Aires. Aportes a la bioestratigrafía del Cenozoico tardío de la Región Pampeana’’, permit nr. 2015-3-P-156-2.
Taxonomic list comments:The body fossils are only included here.
Metadata
Also known as:LLP; near Carhué city
Database number:206032
Authorizer:P. Mannion, E. Vlachos Enterer:M. Kouvari, F. Aspromonte, G. Varnham
Modifier:P. Mannion
Created:2019-10-29 04:19:47 Last modified:2025-02-22 15:12:02
Access level:the public Released:2019-10-29 04:19:47
Creative Commons license:CC0
Reference information

Primary reference:
70684. M. C. Cardonatto and R. N. Melchor. 2018. Large mammal burrows in late Miocene calcic paleosols from central Argentina: paleoenvironment, taphonomy and producers. PeerJ 6:e4787 [P. Mannion/M. Kouvari]

Secondary references:

86907 D. Hontecillas, L. H. Soibelzon, C. I. Montalvo and R. A. Bonini. 2023. Cyonasua zettii sp. nov. (Procyonidae, Mammalia) from the Late Miocene of Central Argentina and a review of the fossil record of Cerro Azul Formation. Historical Biology [E. Vlachos/F. Aspromonte/P. Mannion]
86911 G. I. Schmidt, C. I. Montalvo, E. Cerdeño, R. Sostillo, R. L. Tomassini and R. A. Bonini. 2022. Updated data on Litopterna from the Huayquerian Stage/Age (Late Miocene-Early Pliocene) of central-east Argentina. Comptes Rendus Palevol 21(32):721-743 [P. Mannion/G. Varnham/P. Mannion]