Farola Monte Hermoso St Facies: Montehermosan, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Actinopteri - Percichthyidae
Percichthyidae indet. Jordan and Eigenman 1890
Actinopteri - Siluriformes
Actinopteri - Siluriformes - Trichomycteridae
Mammalia
Mammalia - Didelphimorphia
Mammalia - Panameriungulata - Proterotheriidae
Eoauchenia primitiva Ameghino 1887
Mammalia - Rodentia
Rodentia indet. (Bowdich 1821)
Mammalia - Rodentia - Chinchillidae
Mammalia - Rodentia - Octodontidae
Mammalia - Rodentia - Ctenomyidae
Mammalia - Rodentia - Echimyidae
Mammalia - Rodentia - Myocastoridae
Mammalia - Rodentia - Hydrochoeridae
Mammalia - Rodentia - Caviidae
Prodolichotis sp. Kraglievich 1932
Mammalia - Rodentia - Cricetidae
Cricetidae indet. Fischer von Waldheim 1817
Sigmodontinae sp. Wagner 1843
Mammalia - Notoungulata
Tremacyllus impressus (Ameghino 1888)
Paedotherium sp. Burmeister 1888
Paedotherium typicum (Ameghino 1887)
Mammalia - Notoungulata - Mesotheriidae
Mammalia - Cingulata - Dasypodidae
Mammalia - Cingulata - Pampatheriidae
Plaina cf. intermedia Castellanos 1937
Mammalia - Cingulata - Glyptodontidae
Glyptodontidae indet. Burmeister 1879
Eleutherocercus antiquus (Ameghino 1887)
Plohophorus figuratus Ameghino 1887
Reptilia - Testudines - Testudinidae
Reptilia - Aves
Reptilia - Tinamiformes - Tinamidae
Eudromia cf. elegans Geoffroy Saint-Hilaire 1832
Reptilia - Gruiformes - Hermosiornithidae
Reptilia - Colubridae
Reptilia
Tupinambis sp. Daudin 1802
Amphibia - Temnospondyli
Amphibia - Temnospondyli - Bufonidae
Amphibia - Temnospondyli - Ceratophrynidae
unclassified
see common names

Geography
Country:Argentina State/province:Buenos Aires
Coordinates: 39.0° South, 61.7° West (view map)
Paleocoordinates:38.8° South, 60.8° West (Wright 2013)
Basis of coordinate:stated in text
Altitude:0 meters
Geographic resolution:outcrop
Time
Period: Neogene Epoch: Pliocene
Stage: Zanclean 10 m.y. bin: Cenozoic 6
Key time interval: Montehermosan Mammal zone:  Montehermosan
Age range of interval: 5 - 3.8 m.y. ago
Stratigraphy
Formation:Monte Hermoso
Stratigraphy comments: The lateral accretion deposits are mainly represented at the
middle sector of the cliff, and include the St, Sr, Fsc and Fcf facies.
These levels are equivalent to the “Piso Chapadmalense” of Vignati
(1948), the “Miembro de Limolitas Estratificadas” and “Miembro de
Limolitas Claras” of Bonaparte (1960), the “Unidad B” of Fidalgo
et al. (1975), and the “Unidad Litoestratigráfica II” of Fidalgo and
Tonni (1982)

This collection had a E. Pliocene, Montehermosan SALMA but it's Chapadmalalan?
Lithology and environment
Primary lithology:brown,green breccia
Lithology description: The St facies is composed of dark brown to greenish clastsupported breccias, composed of silty and sandy intraclasts over 15 cm in diameter, some of them rounded, and a silt-sand matrix. In some sections, this facies is massive; while a planar cross-bedding is observed in others
Environment:fluvial indet.
Taphonomy
Modes of preservation:body,trace
Size of fossils:macrofossils,mesofossils
Abundance in sediment:abundant
Collection methods and comments
Collection methods:survey of museum collection
Reason for describing collection:biostratigraphic analysis
Collection method comments: All the materials are housed in the Museo
Municipal de Ciencias Naturales “Carlos Darwin” (Punta Alta,
Buenos Aires), under the acronym MD-FM.
Metadata
Also known as:Piso Chapadmalense St Facies
Database number:152085
Authorizer:C. Jaramillo Enterer:M. Vallejo
Modifier:M. Kouvari Research group:vertebrate
Created:2013-11-06 19:55:14 Last modified:2025-02-22 15:12:02
Access level:group members Released:2015-11-06 19:55:14
Creative Commons license:CC0
Reference information

Primary reference:
48790. R. L. Tomassini, C. I. Montalvo, C.M. Deschamps and T. Manera. 2013. Biostratigraphy and biochronology of the Monte Hermoso Formation (early Pliocene) at its type locality, Buenos Aires Province, Argentina. Journal of South American Earth Sciences 48:31-42 [C. Jaramillo/M. Vallejo]