Dimetrodon

Four-legged dinosaur, 10’ long, with a “sail” of bony spines and skin webbing on its back.

Hit Dice 7 (31p)
Armor Class 14
Attacks 1 (+6) @ 2d8 (bite)
Movement 40’
Saving Throws D10 W11 P12 B13 S14 (F4)
Morale 8
Alignment Neutral
XP 450