Also known as Paraná River
Where: Entre Rios, Argentina (31.7° S, 60.4° W: paleocoordinates 31.8° S, 58.3° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Conglomerado Osifero Member (Ituzaingo Formation), Huayquerian (8.0 - 5.0 Ma)
• The fluvial Ituzaingo Formation overlies the marine unit. This formation is composed of a basal conglomerate (“Conglomerado osifero”) with abundant vertebrate remains which is overlain by almost unfossiliferous whitish to yellow brown sandstones and green mudstones. Terrigenous Pleistocene (Ensenadan to Lujanian in the southern South American continental scale; see Cione and Tonni, 1995, 1996, 2001; Fig. 2), poorly fossiliferous beds assigned to different units overlay the Ituzaingo Formation (Aceñolaza, 1976; Iriondo, 1980; Chebli et al., 1989). The Ituzaingo Formation (as Entre Rios Formation) was correlated with the “Formacio ́n Puelche” of the Buenos Aires province subsoil (Reig, 1957; see below). According to the mammals occurring in the “Conglomerado osifero” and the stratigraphic relationships, the age of the base of Ituzaingo Formation is almost exclusively Tortonian (late Miocene) or Huayquerian in the local chronology (Pascual and Odreman Rivas, 1971; Cione and Tonni, 1995; Fig.2).
Environment/lithology: fluvial; conglomerate and white mudstone
Size class: macrofossils
Collected by S. Roth in 20th century; reposited in the MLP
Primary reference: L. A. Cione, W. M. Dahdul, J. G. Lundberg and A. Machado-Allison. 2009. Megapiranha paranensis, a new genus and species of Serrasalmidae (Characiformes, Teleostei) from the upper Miocene of Argentina. Journal of Vertebrate Paleontology 29(2):350-358 [C. Jaramillo/G. Ballen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 140471: authorized by Carlos Jaramillo, entered by Gustavo Ballen on 10.03.2013, edited by Miranta Kouvari and Grace Varnham
Creative Commons license: CC BY (attribution)
Taxonomic list
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Aves | |
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"Pterocnemia sp." = Rhea1
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Mammalia | |
Cardiatherium paranense2 Ameghino 1883 caviomorph all specimens from the Conglomerado ossifero at the cliffs of Parana river should be assigned to this sp.
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Actinopteri | |
Megapiranha paranensis n. gen. n. sp.
Megapiranha paranensis n. gen. n. sp. Cione et al. 2009 MLP 96-XI-5-1, fragmentary right premaxilla with three complete teeth and one fragmentary tooth (holotype).
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