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CONICET Digital
Article . 2016
License: CC BY
Data sources: CONICET Digital
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Theropod dinosaurs from Argentina

Authors: Ezcurra, Martin Daniel; Novas, Fernando Emilio;

Theropod dinosaurs from Argentina

Abstract

Theropoda incluye a todos los dinosaurios más cercanamente relacionados a las aves que a los sauropodomorfos (dinosaurios de cuello largo) y ornithisquios (dinosaurios con cadera de ave). Los miembros más antiguos del grupo son del Triásico Tardío temprano, y los terópodos no-avianos florecieron durante el resto del Mesozoico hasta su desaparición en la extinción masiva del Cretácico-Paleógeno. Los terópodos radiaron en dos linajes principales, Ceratosauria y Tetanurae, los cuales están bien representados en las rocas cretácicas de Argentina. Los ceratosaurios son los terópodos no-avianos taxonómicamente más diversos de América del Sur, incluyendo especies de pequeño a gran tamaño, tales como el icónico dinosaurio con cuernos Carnotaurus. Los tetanuros argentinos están representados por múltiples linajes que incluyen a algunos de los dinosaurios carnívoros más grandes conocidos a nivel mundial (carcharodontosáuridos), los enigmáticos megaraptores y especies de pequeño a mediano tamaño muy cercanamente relacionadas a las aves (e.g. unenlágiidos). El registro de terópodos no-avianos argentinos ha sido y es crucial para entender la historia evolutiva y paleobiogeográfica del grupo en los continentes del sur durante el Mesozoico.

Theropoda includes all the dinosaurs more closely related to birds than to sauropodomorphs (long-necked dinosaurs) and ornithischians (bird-hipped dinosaurs). The oldest members of the group are early Late Triassic in age, and non-avian theropods flourished during the rest of the Mesozoic until they vanished in the Cretaceous-Palaeogene mass extinction. Theropods radiated into two main lineages, Ceratosauria and Tetanurae, which are well represented in Cretaceous rocks from Argentina. Ceratosaurians are the most taxonomically diverse South American non-avian theropods, including small to large-sized species, such as the iconic horned dinosaur Carnotaurus. Argentinean tetanurans are represented by multiple lineages that include some of the largest carnivorous dinosaurs known worldwide (carcharodontosaurids), the enigmatic large-clawed megaraptorans, and small to medium-sized species very closely related to avialans (e.g. unenlagiids). The Argentinean non-avian theropod record has been and is crucial to understand the evolutionary and palaeobiogeographical history of the group in the southern continents during the Mesozoic.

Fil: Ezcurra, Martin Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina

Fil: Novas, Fernando Emilio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales ; Argentina

Country
Argentina
Keywords

Palaeobiogeography, Saurischia, Evolution, https://purl.org/becyt/ford/1.5, https://purl.org/becyt/ford/1, Dinosauria, Phylogeny

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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