Field Guide: Dinosaurs
Eight species roam Isla Sorna. Collect their eggs, carry them to your Base Camp and hatch them in an Artificial Nest or Incubator, and they fight on your side. Wild ones attack anyone, hunters included.
At a glance
Damage is rolled between the two numbers, then the target's armour is taken off. Accuracy is the chance in 10 that an attack lands. Speed is pixels per game tick (a jeep is 14). Hatch times are at normal game speed.
Tyrannosaurus Rex

tie-RAN-oh-SORE-us-recks"T-Rex"50 ft. long7 tonsCarnivore
With a massive head and a cavernous mouth lined with razor sharp teeth, the T-Rex is one of the largest and most fearsome flesh-eating animals to ever walk the earth.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 200 | 7-60 | 3 | 8/10 | 1 | 14 | 5 |
Hatches in 79 s in a nest, 40 s in an incubator. One attack every 5.3 s.
- The strongest animal on the island, and as fast as a hunter jeep.
- Heals 1 HP every time it bites something that is not a building.
- Each bite is slow, so keep raptors or compys close to finish off wounded hunters.
- Each bite on a hot dog stand heals it 50 HP (San Diego).
Velociraptor

VELL-oh-sih-RAP-tor"Raptor"6 ft. long220 lbs.Carnivore
Raptors are near perfect killers with the intelligence to launch a coordinated attack, the speed to run down quarry, and razor sharp claws to kill and dismember.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 18 | 3-15 | 1 | 9/10 | 1 | 12 | 6 |
Hatches in 48 s in a nest, 24 s in an incubator. One attack every 5.5 s.
- The most accurate dinosaur (9 in 10 bites land) with the best eyesight (vision 6).
- Fragile on its own. Raptors are deadliest in packs of three or more.
- Heals 1 HP with every bite.
Triceratops

try-SERRA-tops"Trike"30 ft. long11 tonsHerbivore
Although a vegetarian, the Triceratops has three menacing horns and a protective neck frill made of solid bone that make it a dangerous enemy.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 150 | 4-50 | 2 | 7/10 | 1 | 8 | 4 |
Hatches in 63 s in a nest, 32 s in an incubator. One attack every 7.9 s.
- A plant-eater, but the second-strongest fighter in the game.
- Two Triceratops are a good match for one hunter tank.
- Can eat trees and bushes that block the way.
Stegosaurus

STEG-oh-SORE-us"Stego"30 ft. long2 tonsHerbivore
This large plant-eating dinosaur has rows of bony plates on its back that it uses as solar panels to help control its body temperature and a spiked tail for fighting off enemies.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 110 | 3-24 | 2 | 6/10 | 1 | 7 | 4 |
Hatches in 63 s in a nest, 32 s in an incubator. One attack every 6.9 s.
- Big and tough but slow. Wild ones are usually not too aggressive.
- Can eat trees and bushes that block the way.
Dilophosaurus

DIE-loh-foh-SAW-rus"Spitter"20' long1000 lbsCarnivore
The Dilophosaurus, originally thought to be a docile scavenger, is actually a very efficient hunter with long, limber arms and the ability to spit poison.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 7 | 2-6 | 2 | 6/10 | 4 | 9 | 4 |
Hatches in 24 s in a nest, 12 s in an incubator. One attack every 5.5 s.
- Spits from 4 tiles away, so it can hit hunters across rivers and fences.
- Only 7 HP: keep it behind bigger dinosaurs.
- Heals 1 HP with every hit.
Parasaurolophus

par-a-SAUR-ah-loaf-us"Para"33 ft. longHerbivore
This "gentle giant" has a duckbill mouth used to scoop up plants from shallow ponds and swamps as well as a large curved horn on its head that can produce sound.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 19 | 2-8 | 1 | 5/10 | 1 | 14 | 4 |
Hatches in 32 s in a nest, 16 s in an incubator. One attack every 5.0 s.
- As fast as a T-Rex but a weak fighter.
- Lives in herds. Mission 5 asks you to drive five of them to the lake.
- Can eat trees and bushes that block the way.
Pachycephalosaurus

PAK-ee-SEF-a-loh-SORE-US"Pachy"15 ft. longHerbivore
Pachys use their thick protective skulls and interlocking spines to crash headlong into each other as a display of dominance, much like the modern day bighorn sheep.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 28 | 2-15 | 2 | 6/10 | 1 | 10 | 4 |
Hatches in 40 s in a nest, 20 s in an incubator. One attack every 7.1 s.
- A cheap, sturdy brawler: more health than a raptor and hits nearly as hard.
- Can eat trees and bushes that block the way.
Compsognathus

COMP-sog-NAY-thus"Compy"2 ft. long6.5 lbs.Carnivore
Although very small, this agile predator is armed with powerful jaws and short forelimbs with two-fingered claws, making it similar to the T-Rex.Chaos Island encyclopedia
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 3 | 1-2 | 0 | 8/10 | 1 | 9 | 4 |
Hatches in 16 s in a nest, 8 s in an incubator. One attack every 4.8 s.
- The quickest hatch: 16 seconds in a nest, 8 in an incubator. Fast enough to scout, but easily killed.
- Mission 3 asks you to hatch three groups of them.
- Heals 1 HP with every bite.
Remdul

Classified
The game has a field card for a creature that never appears in a mission. It can only be summoned with the remdul cheat. Its stats are frightening:
| HP | Damage | Armour | Accuracy | Range | Speed | Vision |
|---|
| 150 | 20-50 | 4 | 8/10 | 5 | 12 | 6 |