Arroyo Ensenada valley: Tortonian, Argentina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Myliobatiformes - Dasyatidae
Dasyatis sp. Rafinesque 1810
Chondrichthyes - Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816
Chondrichthyes - Squatinidae
Squatina sp. Dumeril 1806
Chondrichthyes - Rajiformes - Rajidae
Rajidae indet. Blainville 1816
Chondrichthyes - Carcharhiniformes - Scyliorhinidae
Megascyliorhinus trelewensis
Chondrichthyes - Carcharhiniformes - Carcharhinidae
Carcharhinus sp. de Blainville 1816
Chondrichthyes - Carcharhiniformes - Hemigaleidae
Hemipristis serra Agassiz 1835
Chondrichthyes - Carcharhiniformes - Sphyrnidae
Sphyrna sp. Rafinesque 1810
Chondrichthyes - Carcharhiniformes - Galeocerdidae
Galeocerdo aduncus (Agassiz 1835)
Chondrichthyes - Lamniformes - Carchariidae
Carcharias taurus Rafinesque 1810
Chondrichthyes - Lamniformes - Lamnidae
Carcharodon sp. Smith 1838
2 specimens
Carcharodon plicatilis (Agassiz 1843)
recombined as Cosmopolitodus plicatilis
Chondrichthyes - Lamniformes - Otodontidae
Carcharocles megalodon (Agassiz 1835)
recombined as Otodus megalodon
Also studied in Pimiento and Balk
Chondrichthyes
Holocephali indet. (Bonaparte 1832)
Actinopteri - Sciaenidae
Sciaenidae indet. (Cuvier 1828)
original and current combination Sciaenoidei
Actinopteri - Spariformes - Sparidae
Sparidae indet. (Cuvier 1817)
Actinopteri - Siluriformes - Ariidae
Ariidae indet. Berg 1958
see common names

Geography
Country:Argentina State/province:Entre Rios County:Diamante
Coordinates: 32.1° South, 60.5° West (view map)
Paleocoordinates:32.2° South, 58.1° West
Basis of coordinate:stated in text
Time
Period:Neogene Epoch:Miocene
Stage:Tortonian 10 m.y. bin:Cenozoic 6
Key time interval:Tortonian
Age range of interval:11.62000 - 7.24600 m.y. ago
Stratigraphy
Formation:Parana
Stratigraphic resolution:group of beds
Stratigraphy comments: upper part of the Parana Formation; see p. 169 for discussion of age
Lithology and environment
Primary lithology:green claystone
Secondary lithology: calcareous sandstone
Includes fossils?Y
Lithology description: light green clays with sandy levels, partially cemented by whitish carbonates
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Metadata
Database number:140010
Authorizer:M. Uhen, C. Jaramillo Enterer:M. Uhen, C. Pimiento
Modifier:M. Uhen Research group:vertebrate
Created:2013-02-27 04:47:28 Last modified:2013-02-26 11:52:22
Access level:the public Released:2013-02-27 04:47:28
Creative Commons license:CC BY
Reference information

Primary reference:

45189. A. L. Cione, D. A. Cabrera, and M. J. Barla. 2012. Oldest record of the Great White Shark (Lamnidae, Carcharodon; Miocene) in the Southern Atlantic. Geobios 45:167-172 [M. Uhen/M. Uhen/M. Uhen]

Secondary references:

49081 C. Pimiento and M. Balk. 2015. The extinct giant shark Carcharocles megalodon: A model for understanding deep-time body size trends of marine apex predators. [C. Jaramillo/C. Pimiento/C. Pimiento]