A new crested maniraptoran dinosaur from the Santana Formation (Lower Cretaceous) of Brazil

被引:72
作者
Martill, DM
Cruickshank, ARI
Frey, E
Small, PG
Clarke, M
机构
[1] UNIV LEICESTER,DEPT GEOL,LEICESTER LE1 7RH,LEICS,ENGLAND
[2] STAATLICHES MUSEUM NAT KARLSRUHE,D-76133 KARLSRUHE,GERMANY
[3] UNIV NOTTINGHAM,QUEENS MED CTR,NOTTINGHAM NG7 2UH,ENGLAND
关键词
Brazil; Lower Cretaceous; dinosaurs; biogeography;
D O I
10.1144/gsjgs.153.1.0005
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
The skull of a new, and highly unusual crested dinosaur with an elongate rostrum is the first dinosaur to be named from the Santana Formation of NE Brazil. Irritator challengeri gen. et sp. nov was most likely a maniraptoran dinosaur, but its affinities to other maniraptorans remain to be established. Unique features for Irritator include the pattern of tooth replacement, a highly reduced supratemporal fenestra, extreme lateral compression of the rostrum and a saggital crest comprised of the frontal and parietal bones. Irritator was most probably a piscivore. A land link between South America and the dinosaurian faunal province of North America and Asia is indicated, probably via Africa.
引用
收藏
页码:5 / 8
页数:4
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