saurischian
Concise Oxford English Dictionary © 2008 Oxford University Press:
saurischian /sɔːˈrɪskɪən, -ˈrɪʃɪən/
▶noun Palaeontology a dinosaur of a group with a pelvic structure resembling that of lizards. Compare with ornithischian.
– origin C19: from mod. L. Saurischia (name of an order), from Gk sauros ‘lizard’ + iskhion ‘hip joint’.
'saurischian' also found in these Oxford entries:

