Ammonite Fossil
ExploreAncient
Ammonite Fossil
An ammonite fossil looks like a spiral shell and comes from a creature that swam in the sea. They are now extinct but were once very common!
Appearance
The Ammonite Fossil is a prehistoric marine mollusk, typically appearing as a coiled, spiral shell. Often found in shades of grey, brown, or black, its surface can be smooth or intricately ribbed. Its distinct chambered internal structure sets it apart from modern snail or clam shells.
KingdomAnimalia
Category
AncientRarity
Common
Danger
1/5 · Very low
Snaps
Be the first to snap!
Interesting facts
Ancient people thought ammonite fossils were petrified snakes, called 'snakestones'!
Some ammonites were tiny as a coin; others grew larger than a car tire!
Their closest living relatives are squids and octopuses, not snails!
When cut in half, ammonite shells show beautiful, intricate chamber patterns!
Special abilities
Ability
Oceanic Navigator
Ammonite Fossil can float and sink through ancient seas by using gas-filled chambers that adjust buoyancy.
Ability
Growth Recorder
Ammonite Fossil has growth lines on its shell that record its life history and environmental changes.
Ability
Time Capsule Shell
Ammonite Fossil has a strong, mineralized shell that protects soft body parts for millions of years.
Measurements & details
- Estimated Length
- 0.01-1.8 m
- Estimated Weight
- 0.001-150 kg
- Era
- Mesozoic (Triassic to Cretaceous)
- Extinct Millions Years Ago
- 66
Diet & Feeding
Ammonites were ancient ocean predators, munching on tiny fish, crustaceans, and plankton.
Primary Foods
- Small fish
- Crustaceans
- Plankton
- Other cephalopods
Foraging Method
- Pursuit
Ecological connections
eaten by
Mosasaur
Mosasaurus hoffmannii
A fierce marine reptile that commonly preyed on ammonites.
eaten by
Ichthyosaur
Ichthyosaurus communis
Fast-swimming marine reptiles that hunted cephalopods like ammonites.
eats
Leptolepis fish
Leptolepis coryphaenoides
Ammonites likely fed on small, schooling fish like Leptolepis.
Traits
Ancient
Ancient refers to organisms, objects, or geological formations that have existed for an extremely long period.
Artifact
An artifact is an object made or modified by human culture, typically of historical or archaeological interest.
Fossil
A fossil is the preserved remains or traces of an ancient organism embedded in rock or other geological deposits.
Also known as
Ammonite Shell
Collections
Safety
Danger
1/5 · Very low
Explore with care and ask an adult if you're unsure what to do.
Frequently Asked Questions
How long is Ammonite Fossil?
0.01-1.8 m
How much does Ammonite Fossil weigh?
0.001-150 kg
What does Ammonite Fossil eat?
Ammonites were ancient ocean predators, munching on tiny fish, crustaceans, and plankton.
How does Ammonite Fossil hunt?
Pursuit
What geologic era did Ammonite Fossil live in?
Mesozoic (Triassic to Cretaceous)
When did Ammonite Fossil go extinct?
66
Snap Map
Zoom in to split clusters and explore where this object has been snapped.
Loading map…
Recent Snaps
Recent snaps will appear here as new observations are added.
