Qilong - Dinosauria: Theropoda: Spinosauroidea - Spinosaurs Are Tetanurans, Too

Spinosauroidea

Spinosaurus aegyptiacus Stromer, 1915 -- "the Egyptian spine [thorn] lizard."
S. moroccanus Russell, 1996 -- "the Moroccan spine [thorn] lizard."
Baryonyx walkeri Charig and Milner, 1986 -- "Walker's heavy claw."
Irritator challengeri Martill et al., 1996 -- "Challenger's irritator."
Angaturama limai Kellner and Campos, 1996 -- "Lima's noble one."
Cristatusaurus lapparenti Taquet and Russell, 1998 -- "Lapparent's crested lizard."
Suchomimus tenerensis Sereno et al., 1999 -- "The crocodile immitator from the T�n�r�."

Head studies of various spinosaur genera

Spinosaur head studies. Clockwise from bottom left: Suchomimus tenerensis,
Spinosaurus aegyptiacus, "Spinosaurus" moroccanus [possibly n. gen.],
Baryonyx walkeri, and Irritator challengeri with Angaturama limai
snout added. Discussion of restoration above.