dinochecker
Welcome to our AMAZONSAURUS entry...
Archived dinosaurs: 841
fb twit g+ feed
Dinosaurs from A to Z
Click a letter to view...
A B C D E F G
H I J K L M N
O P Q R S T U
V W X Y Z ?

AMAZONSAURUS

a diplodocoid sauropod dinosaur from the Early Cretaceous of Brazil.
amazonsaurus
Pronunciation: AM-uh-zon-SOR-us
Meaning: Amazon river lizard
Author/s: Carvalho et al. (2003)
Synonyms: None known
First Discovery: Maranhão, Brasil
Chart Position: 435

Amazonsaurus maranhensis

The Amazon basin covers seven million square km of South America, and five and a half million of that is broad-leafed rainforest. How on earth did Carvalho and colleagues manage to find a dinosaur in there? Well, they didn't. Amazonsaurus was found right on the eastern limits of the Brazilian Legal Amazon, in a sun-parched old river delta, so they didn't need the gods on their side, just shovels and picks, and plenty of water to prevent dehydration in the scorching Brazilian heat.

An obscure sauropod, though probably a diplodocoid judging by the tall neural spines on its tail vertebrae, Amazonsaurus is the first early Cretaceous-aged sauropod known from Brasil and the first named dinosaur from the Amazon basin. But its remains are fragmentary which is making its placement at a more specific family level a bit problematic.

Diplodocoids never made it out of the Early Cretaceous, nor did the diplodocoid-eating carcharodontosaurids. Their sudden disappearance in the fossil record has led some palAeontologists to speculate that an extinction event literally stopped them dead in their tracks and from this point onwards the herbivorous titanosaurs and predatory abelisaurids were free to diversify and rush into the vacant "huge plant-muncher" and "huge plant-muncher-munching" niches, at least in South America and Africa.
(Amazon lizard from Maranhão)Etymology
Amazonsaurus is derived from "Amazon" (for the type-locality which is part of the Brazilian Legal Amazon region) and the Greek "sauros" (lizard).
The species epithet, maranhensis, is derived from "Maranhão" (referring to the Brazilian state of Maranhão) and the Latin "ensis" (from).
Discovery
The remains of Amazonsaurus were discovered at the Mata locality in the Itapecuru Formation, Parnaíba Basin, Itapecuru-Mirim County, Maranhão State, northern Brazil.
The holotype (MN 4555-V, 4556, 4558, 4559, 4560, 4562, 4564; UFRJ-DG 58-R/1, 2, 3, 4, 5, 6, ) is a partial skeleton. As of 2012 these are the only identifiable sauropod remains from the early Cretaceous of Brazil.
Estimations
Timeline:
Era: Mesozoic
Epoch: Early Cretaceous
Stage: Aptian-Albian
Age range: 125-100 mya
Stats:
Est. max. length: ?
Est. max. hip height: ?
Est. max. weight: ?
Diet: Herbivore
Family Tree:
Dinosauria
Saurischia
Sauropodomorpha
Sauropoda
Diplodocoidea
Amazonsaurus
maranhensis
References
• Ismar de Souza Carvalho, Leonardo dos Santos Avilla, Leonardo Salgado (2003) "Amazonsaurus maranhensis gen. et sp. nov. (Sauropoda, Diplodocoidea) from the Lower Cretaceous (Aptian-Albian) of Brazil".
• Fernando Novas (2009) "The Age of Dinosaurs in South America". /uk.
Email    Facebook    Twitter    Google+    Stumbleupon    Reddit    Pinterest    Delicious
Time stands still for no man, and research is ongoing. If you spot an error, or want to expand, edit or add a dinosaur, please use this form. Go here to contribute to our FAQ.
All dinos are GM free, and no herbivores were eaten during site construction!
To cite this page:
Atkinson, L. "AMAZONSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 22nd Oct 2017.
  top