Farola (FL1): Montehermosan, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Osteichthyes
Osteichthyes indet. Huxley 1880
Mammalia
Mammalia indet. (Linnaeus 1758)
Mammalia - Cingulata - Glyptodontidae
Glyptodontidae indet. (Burmeister 1879)
Plohophorus figuratus Ameghino 1887
Eleutherocercus antiquus (Ameghino 1887)
Mammalia - Cingulata - Dasypodidae
Macrochorobates chapadmalensis Ameghino 1908
Doellotatus inornatus (Rovereto 1914)
Mammalia - Mylodontidae
Proscelidodon cf. patrius Ameghino 1888
Lestodon sp. Gervais 1855
Mammalia - Panameriungulata - Macraucheniidae
Macraucheniidae indet. Ameghino 1889
Mammalia - Panameriungulata - Proterotheriidae
Eoauchenia aff. primitiva Ameghino 1887
Mammalia - Rodentia
Rodentia indet. Bowdich 1821
Mammalia - Rodentia - Ctenomyidae
Actenomys priscus Owen 1840
Mammalia - Rodentia - Octodontidae
Pithanotomys sp. Ameghino 1887
Mammalia - Rodentia
Neophanomys sp. Rovereto 1914
Mammalia - Rodentia - Myocastoridae
Paramyocastor diligens Ameghino 1888
Mammalia - Rodentia - Chinchillidae
Lagostomus sp. Brookes 1828
Mammalia - Rodentia - Caviidae
Caviidae indet. Gray 1821
Palaeocavia sp. Ameghino 1889
Orthomyctera sp. Ameghino 1889
Mammalia - Rodentia - Hydrochoeridae
Phugatherium cataclisticum Ameghino 1887
Mammalia - Rodentia - Cricetidae
Necromys bonapartei Reig 1978
Auliscomys formosus Reig 1978
Mammalia - Notoungulata - Toxodontidae
Toxodontidae indet. Scott 1873
Toxodon chapalmalensis Ameghino 1908
Mammalia - Notoungulata - Mesotheriidae
Pseudotypotherium sp. Ameghino 1904
Mammalia - Notoungulata
Paedotherium sp. Burmeister 1888
Paedotherium bonaerense (Ameghino 1887)
Reptilia - Cariamiformes - Cariamidae
Chunga incerta Tonni 1974
Reptilia - Anseriformes - Anatidae
Dendrocygna sp. Swinson 1837
Reptilia - Testudines - Testudinidae
Chelonoidis cf. australis (Moreno 1889)
Reptilia
Tupinambis sp. Daudin 1802
Amphibia - Temnospondyli - Ceratophrynidae
Ceratophrys sp. Wied 1824
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
Geographic resolution:small collection
Time
Period: Neogene Epoch: Pliocene
Stage: Zanclean 10 m.y. bin: Cenozoic 6
Key time interval: Montehermosan
Age range of interval: 4.9 - 3.7 m.y. ago
Stratigraphy
Stratigraphy comments: The complete sedimentary sequence includes three stratigraphic units (Zavala, 1993): the Monte Hermoso Forma- tion (Lower–Middle Pliocene), Puerto Belgrano Formation (Upper Pleistocene) and Punta Tejada Formation (Upper Pleistocene–Middle Holocene). The Monte Hermoso Formation (Zavala, 1993) crops out at the abrasion platform and the lower part of the cliff, along its entire extension, with a maximum thickness of up to 6 m. Zavala and Navarro (1993) interpreted that the Monte Hermoso Formation was deposited through a fluvial dynamic of high sinuosity muddy fine-grained rivers. These authors identified architectural elements of channel, lateral accretion deposits and overbank deposits.
Lithology and environment
Primary lithology:red or brown lithified muddy siltstone
Secondary lithology:red or brown lithified silty siltstone
Includes fossils?Y
Lithology description: The FL 1 is included in deposits mainly composed by muddy silt- stones, with colors that range from reddish brown to yellowish brown. Reddish brown sandy siltstones and silty sandstones are present too. These deposits have a massive structure in the middle– upper sector, while in the lower one they show a very fine lamination.
Environment:"floodplain"
Geology comments: The floodplain taphonomic mode was recognized in Farola (FL 1). The taphonomic characteristics of this mode partially correspond to those of model I (rapidly accumulated and buried elements), and model II (resedimented elements, with considerable exposure before burial), proposed by Johnson (1960) for putative formation mechanisms of fossil assemblages.
Taphonomy
Modes of preservation:body,original phosphate
Size of fossils:macrofossils,mesofossils,microfossils
Temporal resolution:time-averaged
Spatial resolution:allochthonous
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taphonomic analysis
Collection method comments: Fossil remains are deposited in the 'Museo Municipal de Ciencias Naturales Carlos Darwin' (Punta Alta, Buenos Aires), under the acronym MD-FM.
Metadata
Database number:152062
Authorizer:C. Jaramillo Enterer:A. Cárdenas
Modifier:M. Kouvari
Created:2013-11-05 08:24:18 Last modified:2025-02-22 15:12:02
Access level:authorizer only Released:2014-11-05 08:24:18
Creative Commons license:CC0
Reference information

Primary reference:
48757. R. L. Tomassini and C. I. Montalvo. 2013. Taphonomic modes on fluvial deposits of the Monte Hermoso Formation (early Pliocene), Buenos Aires province, Argentina. Palaeogeography, Palaeoclimatology, Palaeoecology 369:282-294 [C. Jaramillo/A. Cárdenas]