Diplodon cf. Colhuapiensis (Bivalvia, Hyriidae) in the Santa Cruz Formation (Early–Middle Miocene) at the Río Santa Cruz, Patagonia, Argentina: stratigraphic and paleoenvironmental considerations

The Santa Cruz Formation (Early–Middle Miocene) is one of the most widespread sedimentary units of the Argentine Patagonia. This unit contains an abundant and taxonomically diverse fossil vertebrate fauna, especially in mammals. Thus, the paleoecological and paleoenvironmental information derives ma...

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Autores principales: Pérez, Leandro Martín, Cuitiño, José Ignacio, Varela, Augusto Nicolás, Muñoz, Nahuel Antu
Formato: Articulo
Lenguaje:Inglés
Publicado: 2019
Materias:
Paleontología
Diplodon
Hyriidae
Sehuenense stage.
Neogene
Santa Cruz Formation
Argentina
Patagonia
Piso Sehuenense
Neógeno
Formación Santa Cruz
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/115996
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-115996
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Paleontología
Diplodon
Hyriidae
Sehuenense stage.
Neogene
Santa Cruz Formation
Argentina
Patagonia
Piso Sehuenense
Neógeno
Formación Santa Cruz
spellingShingle Paleontología
Diplodon
Hyriidae
Sehuenense stage.
Neogene
Santa Cruz Formation
Argentina
Patagonia
Piso Sehuenense
Neógeno
Formación Santa Cruz
Pérez, Leandro Martín
Cuitiño, José Ignacio
Varela, Augusto Nicolás
Muñoz, Nahuel Antu
Diplodon cf. Colhuapiensis (Bivalvia, Hyriidae) in the Santa Cruz Formation (Early–Middle Miocene) at the Río Santa Cruz, Patagonia, Argentina: stratigraphic and paleoenvironmental considerations
topic_facet Paleontología
Diplodon
Hyriidae
Sehuenense stage.
Neogene
Santa Cruz Formation
Argentina
Patagonia
Piso Sehuenense
Neógeno
Formación Santa Cruz
description The Santa Cruz Formation (Early–Middle Miocene) is one of the most widespread sedimentary units of the Argentine Patagonia. This unit contains an abundant and taxonomically diverse fossil vertebrate fauna, especially in mammals. Thus, the paleoecological and paleoenvironmental information derives mainly from the analysis of the vertebrate assemblages, as well as from the ichnological and paleobotanical evidence. The record of freshwater bivalves assigned to the species Diplodon cf. colhuapiensis Ihering, 1903 from the Santa Cruz Formation, collected in the locality of Barrancas Blancas (Estancia Santa Lucía), at Río Santa Cruz, allows us to infer the particular paleoenvironmental conditions setting during the deposition of the bearing levels. Considering this record, we propose that Diplodon, which was originally assigned to the “Sehuenense stage” (piso sehuenense of F. Ameghino), could have come from the Early–Middle Miocene of the Santa Cruz Formation. In this sense, the specimens referred to Diplodon cf. colhuapiensis suggest the existence of an established community of Hyriidae mollusks at the upper-middle levels of the Santa Cruz Formation. The presence of freshwater bivalves suggests that the depositional environment of this unit included the existence of water courses. The identification of the genus in the Santa Cruz Formation validates its presence in the Early Miocene and extends its southern distribution to the latitude of Río Santa Cruz (~ 50º S).
format Articulo
Articulo
author Pérez, Leandro Martín
Cuitiño, José Ignacio
Varela, Augusto Nicolás
Muñoz, Nahuel Antu
author_facet Pérez, Leandro Martín
Cuitiño, José Ignacio
Varela, Augusto Nicolás
Muñoz, Nahuel Antu
author_sort Pérez, Leandro Martín
title Diplodon cf. Colhuapiensis (Bivalvia, Hyriidae) in the Santa Cruz Formation (Early–Middle Miocene) at the Río Santa Cruz, Patagonia, Argentina: stratigraphic and paleoenvironmental considerations
title_short Diplodon cf. Colhuapiensis (Bivalvia, Hyriidae) in the Santa Cruz Formation (Early–Middle Miocene) at the Río Santa Cruz, Patagonia, Argentina: stratigraphic and paleoenvironmental considerations
title_full Diplodon cf. Colhuapiensis (Bivalvia, Hyriidae) in the Santa Cruz Formation (Early–Middle Miocene) at the Río Santa Cruz, Patagonia, Argentina: stratigraphic and paleoenvironmental considerations
title_fullStr Diplodon cf. Colhuapiensis (Bivalvia, Hyriidae) in the Santa Cruz Formation (Early–Middle Miocene) at the Río Santa Cruz, Patagonia, Argentina: stratigraphic and paleoenvironmental considerations
title_full_unstemmed Diplodon cf. Colhuapiensis (Bivalvia, Hyriidae) in the Santa Cruz Formation (Early–Middle Miocene) at the Río Santa Cruz, Patagonia, Argentina: stratigraphic and paleoenvironmental considerations
title_sort diplodon cf. colhuapiensis (bivalvia, hyriidae) in the santa cruz formation (early–middle miocene) at the río santa cruz, patagonia, argentina: stratigraphic and paleoenvironmental considerations
publishDate 2019
url http://sedici.unlp.edu.ar/handle/10915/115996
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