35 research outputs found
A Jurassic ornithischian dinosaur from Siberia with both feathers and scales
Feathers, not just for the birds?
Theropod dinosaurs, thought to be the direct ancestors of birds, sported birdlike feathers. But were they the only feathery dino group? Godefroit
et al.
describe an early neornithischian dinosaur with both early feathers and scales. This seemingly feathery nontheropod dinosaur shows that feathers were not unique to the ancestors of birds and may even have been quite widespread.
Science
, this issue p.
451
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A New Saurolophine Dinosaur from the Latest Cretaceous of Far Eastern Russia
Background: Four main dinosaur sites have been investigated in latest Cretaceous deposits from the Amur/Heilongjiang Region: Jiayin and Wulaga in China (Yuliangze Formation), Blagoveschensk and Kundur in Russia (Udurchukan Formation). More than 90% of the bones discovered in these localities belong to hollow-crested lambeosaurine saurolophids, but flat-headed saurolophines are also represented: Kerberosaurus manakini at Blagoveschensk and Wulagasaurus dongi at Wulaga. Methodology/Principal Findings: Herein we describe a new saurolophine dinosaur, Kundurosaurus nagornyi gen. et sp. nov. from the Udurchukan Formation (Maastrichtian) of Kundur, represented by disarticulated cranial and postcranial material. This new taxon is diagnosed by four autapomorphies. Conclusions/Significance: A phylogenetic analysis of saurolophines indicates that Kundurosaurus nagornyi is nested within a rather robust clade including Edmontosaurus spp. Saurolophus spp. and Prosaurolophus maximus, possibly as a sister-taxon for Kerberosaurus manakini also from the Udurchukan Formation of Far Eastern Russia. The high diversity and mosaic distribution of Maastrichtian hadrosaurid faunas in the Amur-Heilongjiang region are the result of a complex palaeogeographical history and imply that many independent hadrosaurid lineages dispersed without any problem between western America and eastern Asia at the end of the Cretaceous. © 2012 Godefroit et al.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
Pathological ulna of Amurosaurus riabinini from the Upper Cretaceous of Far Eastern Russia
Insights into the brain of two hadrosaurid dinosaurs from Kundur, Russia
info:eu-repo/semantics/publishe
A new basal hadrosauroid dinosaur from the upper Cretaceous of Kazakhstan
SCOPUS: ch.binfo:eu-repo/semantics/publishe
Braincase (AENM 2/121) of <i>Kundurosaurus nagornyi</i> gen. et sp. nov., in right (A, B) and left (C, D) lateral views, close-up of the hypophyseal cavity (E).
<p>F: caudal view of the braincase (AENM 2/928).</p
Dentaries of <i>Kundurosaurus nagornyi</i> gen. et sp. nov.
<p>A-B: AENM 2/846 in lateral (A) and medial (B) views. C-D: AENM 2/902 in lateral (C) and medial (D) views.</p
Right scapula (AENM 2/906) of <i>Kundurosaurus nagornyi</i> gen. et sp. nov., in lateral (A), medial (B), and ventral (C) views.
<p>Right scapula (AENM 2/906) of <i>Kundurosaurus nagornyi</i> gen. et sp. nov., in lateral (A), medial (B), and ventral (C) views.</p
Left humerus (AENM 2/908) of <i>Kundurosaurus nagornyi</i> gen. et sp. nov., in cranial (A) and caudal (B) views.
<p>Left humerus (AENM 2/908) of <i>Kundurosaurus nagornyi</i> gen. et sp. nov., in cranial (A) and caudal (B) views.</p
Endocranial reconstruction of <i>Kundurosaurus nagornyi</i> gen. et sp. nov. (AENM 2/121).
<p>A: drawing of the left lateral view. B: rear 3/4 view, reconstructed from CT scan. C: dorsal view, reconstructed from CT scan.</p