Results 41 to 50 of about 254 (103)

Totoralia, a new conical-shaped mollusk from the middle Cambrian of western Argentina

open access: yesGeologica Acta, 2011
The new genus Totoralia from the late middle Cambrian of El Totoral (Mendoza Province, western Argentina) is described herein. It is a delicate, high, bilaterally symmetrical cone with a sub-central apex and five to seven prominent comarginal ...
M.F. TORTELLO, N.M. SABATTINI
doaj  

Los yaguares vivientes y extinguidos : de la América Austral [PDF]

open access: yes, 1934
Fil: Cabrera, Angel. Departamento de Paleozoología Vertebrados; Facultad de Ciencias Naturales y Museo; Universidad Nacional de La ...
Cabrera, Angel
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Early Jurassic coral reef development outside Tethys: an example from western Argentina [PDF]

open access: yes
Coral-reefs suffered during the end-Triassic extinction event, being scarce during the Early Jurassic. This paper deals with an Early Pliensbachian reef from Puesto Araya, southern Mendoza, Argentina.
Echevarría, Javier   +4 more
core   +1 more source

GEOCHEMICAL SIGNALS IN PALEOGENE PENGUINS FROM SEYMOUR ISLAND (ISLA MARAMBIO), ANTARCTIC PENINSULA

open access: yesPublicación Electrónica de la Asociación Paleontológica Argentina, 2023
Trace elements, particularly rare earth elements (REE), are widely used as proxies to reconstruct paleoenvironmental and taphonomic conditions. We traced these elements in fossil penguin bones collected along the Paleogene sequence exposed in Seymour ...
Leandro Martín Pérez   +6 more
doaj   +1 more source

Bivalves and evolutionary resilience: Old skills and new strategies to recover from the P/T and T/J extinction events [PDF]

open access: yes, 2011
Diversity dynamics among bivalves during the Triassic and Early Jurassic provides the opportunity to analyse the recovery patterns after two mass extinctions: Permian/Triassic and Triassic/Jurassic (T/J).
Echevarría, Javier   +4 more
core   +1 more source

Pectinids from the Paraná Formation (Miocene) Entre Ríos - Argentina [PDF]

open access: yes, 2011
Se describen tres especies de pectínidos (Bivalvia: Pectinidae) proveniente de la Formación Paraná (Mioceno) de la provincia de Entre Ríos. Estas son Aequipecten paranensis (d´Orbigny, 1842), Amusium darwinianum (d´Orbigny, 1842) y Flabellipecten ...
Pérez, Leandro Martín   +2 more
core  

Early Cambrian archaeocyathan limestone blocks in low-grade meta-conglomerate from El Jagüelito Formation (Sierra Grande, Río Negro, Argentina)

open access: yesGeologica Acta, 2011
Massive grey limestone blocks containing a fairly diverse but poorly preserved archaeocyath fauna were recovered from a meta-conglomerate bed in the El Jagüelito Formation (Sierra Grande area, Eastern North Patagonian Massif, Río Negro, Argentina).
P.D. GONZÁLEZ   +2 more
doaj  

Catálogo de material tipo e ilustrado de invertebrados fósiles del Museo de La Plata, Parte 2

open access: yes, 2003
Fil: Riccardi, Alberto Carlos. División Paleozoología Invertebrados, Museo de La Plata; ArgentinaFil: Martin, Carmen Susana.
Riccardi, Alberto Carlos   +1 more
core  

Data from: Evaluation of the ontogeny and sexual dimorphism in a new species of Middle Triassic Darwinulocopina (Crustacea, Ostracoda) from Argentina

open access: yes, 2020
The data comprises the linear measurements (length, width and heigth in microns) and the Procrustes coordinates in lateral and dorsal views of the carapaces of the Darwinulocopina Prasuchonella huarpe (Middle Triassic, Cerro de las Cabras Formation ...
Echevarría, Javier   +2 more
core   +1 more source

A New Nelala (Odonata: Frenguelliidae) from the Eocene of Arroyo Chacay, Patagonia, Argentina [PDF]

open access: yes, 2023
A new species of Odonata, Nelala chacay sp. nov., from the Eocene of Northern Patagonia, Argentina, is described. The new species is the sixth one of the endemic Patagonian Eocene family Frenguelliidae. Nelala chacay sp. nov.
Petrulevicius, Julian Fernando
core  

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