Gastropods have internal shells
Cuttlefish have external shells
Ammonites have external shells
Straight, with gas filled chambers
Coiled, with no chambers
Coiled, with gas filled chambers
Fossilised cow pats
Snakes, magically turned to stone
Crushed snail shells
Floated in the oceans, eating shrimp
Lived on land, eating plants
Lived in freshwater, eating shrimp
Were purple with pink spots
Looked liked modern squid
Made clicking sounds as they swam
The ligament between their shells
The animal's soft tissue
The shape of their shells
Deep English lakes
A few Scottish sea-lochs
Welsh mountain streams
A tough, jointed exoskeleton
A tough, jointed endoskeleton
A tough, fused exoskeletons
Puffing their bodies up
Shedding their exoskeleton
Growing more legs
Lobsters and crabs
Beetles and bugs
Spiders and scorpions
Are living animals made of stone
Haven't changed in millions of years
Are easily fossilised today
The Isle of Man
The Isle of Wight
The Isle of Dogs
The woodlouse
The honeybee
The spider
Drawing in the sand
Swirling in the water
Writing on the rock
Two legs
Five arms
Thirteen fingers