Notas Sobre Spinosauridae (Theropoda, Dinosauria)

Anuário do Instituto de Geociências

关键词: Dinosauria;    Theropoda;    Spinosauridae;   

DOI  :  

来源: DOAJ

【 摘 要 】

Spinosaur remains were collected in Africa, Europa, Asia and Brazil,coming from deposits with ages ranging from the Late Jurassic to the LateCretaceous. Although having a wide distribution - both geographically andtemporally - little is actually known about the group since most specimens areincomplete. Up to now, only eight species were described. Spinosauridae is divided into the Baryonychinae (Suchomimus + Baryonyx + Cristatosaurus)and Spinosaurinae (Spinosaurus+ Angaturama + Irritator). Only in Africamembers of both clades were found. One possible scenario that could explainthe spinosaurid distribution, suggests that forms related to Baryonyx (the mostprimitive member of this clade) dispersed from Europe to Northern Africa,where Spinosaurinae were originated. Later, members of the Spinosaurinaefurther spread to South America.

【 授权许可】

Unknown