Major Characteristics of the Saurichian

(modified from Weishampel et al., 1990 and Fastovsky & Weishampel, 1996)

 

 

 

 

 

 

 

 

 

1) Subnarial foramen

2) Elongate posterior cervical vertebrae giving a relatively long neck

3) Hyposphene-hypantrum articulations

4) Relatively long hand (manus more than 45% the length of the humerus and radius together)

5) Asymmetrical manus with digit II the longest

6) Large thumb

7) Tri-radiate pelvis (remember, this is the primitive condition & not a synapomorphy)