From the publisher:
Goodman Games and Blackdirge Publishing present the next product in the Critter Cache line: Critter Cache: Prehistoric Beasts. If you're missing a bit of the old school, lost world feel in your Fourth Edition Dungeons & Dragons campaign, then look no further. Critter Cache: Prehistoric Beasts gives you 27 dinosaurs (behemoths) and other prehistoric monsters to fill your ancient jungles and primeval forests. Here you’ll find old favorites like T-rex, Velociraptor, and Triceratops, plus a whole bevy of other monsters; all based on real-world prehistoric critters.
Let Goodman and Blackdirge bring the primeval back to your campaign with Critter Cache: Prehistoric Beasts.
Critter Cache: Prehistoric Beasts features 26 pages of new 4E material, and includes the following monster entries:
Deathjaw Behemoths: Devilsnout Behemoth (Ceratosaurus), Sailback Behemoth (Spinosaurus), Tyrantfang Behemoth (Tyrannosaurs Rex)
Finned Behemoth: Seawolf Behemoth (Plesiosaurus), Titanmaw Behemoth (Liopleurodon)
Hardskull Behemoth: Domeskull Behemoth (Stegoceras), Shatterskull Behemoth (Pachycephalosaurus)
Horned Behemoth: Parrotjaw Behemoth (Protoceratops), Spikefrill Behemoth (Styracosaurus), Hornface Behemoth (Triceratops)
Leatherwing: Daggertail Swarm (Rhamphorhynchus), Crested Leatherwing (Pteranodon), Dire Leatherwing (Quetzalcoatlus)
Prehistoric Crocodile: Walking Crocodile (Postosuchus), Titanslayer Crocodile (Sarcosuchus)
Prehistoric Fish: Steelsnap Leviathan (Dunkleosteus), Megatooth Shark (Megalodon)
Raptor: Knifetooth Raptor (Velociraptor), Feathered Raptor (Deinonychus), Deathtalon Raptor (Utahraptor)
Spikeshell Kraken: Spikeshell Kraken (Cameroceras)
Swiftscale: Swiftscale Hopper (Coelophysis), Swiftscale Bandit (Oviraptor), Swiftscale Racer (Dryosaurus)
Thunderstep Behemoth: Ironskin Behemoth (Saltasaurus), Earthshaker Behemoth (Argentinosaurus)