Island Saver

There are 20 Fossils spread out around the island.

Newton's Lab
1) Next to the blue electric gate.

Carnivore Cove
2) Behind the Recycle Machines
3) Under the waterfall (you can walk on the water here)

Between Carnivore Cove and Lava Falls
4) In midair after destroying the amber, use T-Rex to collect it

Lava Falls
5) On top of a rock formation over the lava, clean the area to gain access.

Frosty Fields
6) Behind Coin Deposit Machine
7) Climb up the rock formation in the water next to #6

Ice Age Pass
8) Inside tree tunnel after clearing the area

Venus's Lair
9) Behind Venus Debt Trap

Redwood Coast
10) Midair next to Tax Machine, quickly summon T-Rex with and then to reach.
11) Under tax bridge

Bird Bay
12) In the corner next to the water
13) On the rock platform directly above Bird Bay, accessible after unlocking Pteranodon

Out At Sea
14) On top of tall rock platform directly opposite Bird Bay
15) Fly through the caves to the right of #14
16) On three small platforms directly opposite the tax bridge

Amber Cliffs
17) In cave opening above Amber Cliffs, visible as you fly in for the first time.
18) Directly below #17 on the coast
19) Behind the giant tree with the trapped key

Exit Island
20) Just past the gold gate to the left