FREQUENCY: Uncommon (Permian - OSRIC.186)

FREQUENCY: Uncommon ([Tropical Wilderness Swamp], [Tropical Wilderness Plains])
FREQUENCY: Rare ([Tropical Wilderness Hills], [Tropical Wilderness Desert])
FREQUENCY: Rare ([Tropical Freshwater Surface], [Tropical Freshwater Depths])

NO. APPEARING: 1-2
ARMOR CLASS: 4
MOVE: 12" // 6"
HIT DICE: 3 to 5
% IN LAIR: Nil
TREASURE TYPE: Nil
NO. OF ATTACKS: 1
DAMAGE/ATTACK: 6-15 (bite)
SPECIAL ATTACKS: Nil
SPECIAL DEFENSES: Nil
INTELLIGENCE: Non-
ALIGNMENT: Neutral
SIZE: L (9' long)
LEVEL/X.P. VALUE: III | 65 + 4

SAVES, 3 HD: (13)14.15.16.17.17
SAVES, 4 HD: (13)14.15.16.17.17
SAVES, 5 HD: (11).13.14.15.16.16

The "sail-backed" dimetrodon is a fierce predator of the lower Permian period.
It is alligator-like and is actually a reptile, not a dinosaur.
Its ability to swim is questionable but likely.
Its powerful bite makes up for its lack of claw attacks.