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TRIUNFOSAURUS

a plant-eating titanosaurian sauropod dinosaur from the Early Cretaceous of Brasil.
Pronunciation: tree-UN-fo-SOR-us
Meaning: Triunfo lizard
Author/s: Carvalho, et al. (2017)
Synonyms: None known
First Discovery: Triunfo Basin, Brasil
Chart Position: 777

Triunfosaurus leonardii

Dinosaur tracks from Brazil's Early Cretaceous-aged Rio do Peixe complex of neighboring basins are common and well documented, and include those of theropods, sauropods, ornithopods and a possible thyreophoran, none of which could be tied to associated skeletal remains, mainly because the area hadn't yielded any. That changed in 2016, when paleontologists described the first dinosaur fossil from the Rio Piranha Formation of the Sousa Basin—found by local resident Luiz Carlos Gomes—which represents the oldest sauropod known from Brazil and the earliest stratigraphic occurrence of its ilk in central Gondwana, no less. Despite its significance, the describing authors refrained from polluting the literature with another unnecessary dinosaur name based on scant remains—in this case a juvenile shankbone—and instead simply referred to it as "Sousatitan". Unfortunately, not all scientists have the same mindset, and in 2017 Souza Carvalho and colleagues officially coined Triunfosaurus from the Rio Piranhas Formation of the Triunfo Basin which has a high probability of being the same critter as "Sousatitan". But even if their remains were combined, they would still be on the meagre side of sparce.
(Leonardi's Triunfo lizard)Etymology
Triunfosaurus is derived from "Triunfo" (for the Triunfo Basin where it was found) and the Greek "sauros" (lizard). The species epithet, leonardii, honors Giuseppe Leonardi of the Federal University of Rio de Janeiro, who has dedicated a huge chunk of his life to the study of the reptile ichnofauna (tracks, footprints, burrows and the like) of northeastern Brazil.
Discovery
The remains of Triunfosaurus were discovered at "Areias Farm" in the Rio Piranhas Formation of the Triunfo Basin, Paraíba State, Brasil. The holotype (UFRJ-DG 498-K-R) includes the haemal arches and neural spines from three tail vertebrae, and a hip bone (right ischium), belonging to one of the oldest basal titanosaurs known from Gondwana (modern day Antarctica, South America, Africa, Madagascar and Australia).
Estimations
Timeline:
Era: Mesozoic
Epoch: Early Cretaceous
Stage: Berriasian-Hauterivian
Age range: 145-135 mya
Stats:
Est. max. length: ?
Est. max. hip height: ?
Est. max. weight: ?
Diet: Herbivore
Family Tree:
Dinosauria
Saurischia
Sauropodomorpha
Sauropoda
Macronaria
Titanosauria
Triunfosaurus
leonardii
References
• Ismar de Souza Carvalho, Leonardo Salgado, Rafael Matos Lindoso, Hermínio Ismael de Araújo-Júnior, Francisco Cézar Costa Nogueira, José Agnelo Soares (2017) "A new basal titanosaur (Dinosauria, Sauropoda) from the Lower Cretaceous of Brazil". Journal of South American Earth Sciences / doi: 10.1016/j.jsames.2017.01.010.
• Ghilardi AM, Aureliano T, Duque RRC, Fernandes MA, Barreto AMF, Chinsamy A (2016) "A new titanosaur from the Lower Cretaceous of Brazil". Cretaceous Research 67 (2016) 16-24.
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To cite this page:
Atkinson, L. "TRIUNFOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 23rd Jun 2017.
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