Viavenator

Viavenator
Intervalo temporal: Cretáceo Superior
~86–83 Ma
Life restoration of Viavenator exxoni
Classificação científica e
Domínio: Eukaryota
Reino: Animalia
Filo: Chordata
Clado: Dinosauria
Clado: Saurischia
Clado: Theropoda
Família: Abelisauridae
Clado: Furileusauria
Gênero: Viavenator
Filippi et al., 2016
Espécie-tipo
Viavenator exxoni
Filippi et al., 2016

Viavenator (Viavenator exxoni, do latim "caçador da estrada") foi uma espécie de dinossauro carnívoro e bípede que viveu durante o período Cretáceo tardio, principalmente na região onde hoje situa-se a América do Sul. Nomeado em 2016, o Viavenator possuía uma morfologia cerebral semelhante ao Aucassauro, outro terópode Abelisauridae da América do Sul, que tinha um ouvido interno semelhante. Além disso, quando comparado a um outro Abelisauridae africano, o majungassauro, foi determinado que o Viavenator era mais dependente de movimentos velozes com a cabeça e de sofisticados mecanismos de estabilização do olhar do que o antigo terópode; porém, ambos os gêneros tiveram uma faixa de audição semelhante de acordo com exames e consecutivas tomografias computadorizadas do crânio.[1]

Viavenator, um terópode mediano, medindo em torno de 5,6 metros de comprimento por 2 metros de altura, descoberto na Formação Bajo de la Carpa, na província de Neuquén (Argentina), por S. Palomo e C. Fuentes.[2]

Filippi (o nomeador do Viavenator) classificou-o como um novo clado conhecido como "Furileusauria", que inclui o Viavenator e o carnotauro. Isso significaria que o Viavenator estivera mais próximo do carnotauro do que do majungassauro.[3]

Filogenia

Abelisauridae

Chenanisaurus

Pourcieux taxon

"Kryptops"

Rugops

Majungasaurinae

Rajasaurus

Indosaurus

Majungasaurus

Genusaurus

Arcovenator

La Boucharde Taxon

Brachyrostra

Thanos simonattoi

Viavenator

Carnotaurus

Aucasaurus

Abelisaurus

Quilmesaurus

Pycnonemosaurus

Skorpiovenator

Ekrixinatosaurus

Ilokelesia

Xenotarsosaurus

Rahiolisaurus

Dahalokely


Ver também

Era Período M. anos
Mesozoico Cretáceo 145,5 ±4,0
Jurássico 199,6 ±0,6
Triássico 251,0 ±0,4

Referências

  1. ferwen (23 de junho de 2017). «Neuroanatomy of the abelisaurid theropod Viavenator exxoni». Letters from Gondwana. (em inglês). Consultado em 7 de fevereiro de 2020 
  2. Grillo, Orlando Nelson; Delcourt, Rafael (janeiro de 2017). «Allometry and body length of abelisauroid theropods: Pycnonemosaurus nevesi is the new king». Cretaceous Research (em inglês). 69: 71–89. doi:10.1016/j.cretres.2016.09.001 
  3. Filippi, Leonardo S.; Méndez, Ariel H.; Juárez Valieri, Rubén D.; Garrido, Alberto C. (junho de 2016). «A new brachyrostran with hypertrophied axial structures reveals an unexpected radiation of latest Cretaceous abelisaurids». Cretaceous Research. 61: 209–219. ISSN 0195-6671. doi:10.1016/j.cretres.2015.12.018 
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