Dinosaur, Spinosaurus
Largest of the bipedal predatory dinosaurs, towering even over the tyrannosaurus. It has longer arms than the latter, and it occasionally moves on all fours. It’s named for its large, saillike, ribbed fin that extends down the length of its back.
Originally Posted by Raptorial of the Wizards Community forums.

Spinosaurus | |
Gargantuan animal | |
Hit Dice | 24d8+120 (228 hp) |
Initiative | +0 |
Speed | 40 ft. (8 squares), Swim 40 ft. (8 squares) |
Armor Class | 13 (-4 size, +7 natural), touch 6, flat-footed 13 |
Base Attack/Grapple | +18/+39 |
Attack | Bite +23 melee (2d8+9) |
Full Attack | Bite +23 melee (2d8+9) and 2 claws +18 melee (2d6+4) |
Space/Reach | 20 ft./15 ft. |
Special Attacks | Improved grab, swallow whole |
Special Qualities | Low-Light Vision, hold breath (7 rounds x Constitution modifier), Scent |
Saves | Fort +21, Ref +16, Will +10 |
Abilities | Strength 29, Dexterity 11, Constitution 21, Intelligence 2, Wisdom 11, Charisma 12 |
Skills | Hide -10, Intimidate +6, Listen +7, Move Silently +2, Search +3, Spot +7, Survival +4 |
Feats | Alertness, Die Hard, Endurance, Great Fortitude, Iron Will, lightning reflexes, Power Attack, Stealthy, Track |
Environment | Warm marshes |
Organization | Solitary, Pair, or Family (2-5) |
Challenge Rating | 16 |
Treasure | None |
Alignment | Always neutral |
Advancement | 25-48 HD (Gargantuan); 49-72 HD (Colossal) |
Level Adjustment | – |