Sources
Where every fact on fossils.im comes from.
- Encyclopaedia Britannica: amber, checked 31 Oct 2026. Used for 3 facts.
- Encyclopaedia Britannica: ammonoid, checked 31 Oct 2026. Used for 2 facts.
- Encyclopaedia Britannica: arthropod (trilobites), checked 31 Oct 2026. Used for 2 facts.
- Encyclopaedia Britannica: coprolite, checked 31 Oct 2026. Used for 2 facts.
- Encyclopaedia Britannica: crinoid, checked 31 Oct 2026. Used for 2 facts.
- Encyclopaedia Britannica: ichthyosaur, checked 31 Oct 2026. Used for 2 facts.
- Encyclopaedia Britannica: mammoth, checked 31 Oct 2026. Used for 2 facts.
- Encyclopaedia Britannica: megalodon, checked 31 Oct 2026. Used for 4 facts.
- Encyclopaedia Britannica: mosasaur, checked 31 Oct 2026. Used for 3 facts.
- Encyclopaedia Britannica: sabre-toothed cat, checked 31 Oct 2026. Used for 2 facts.
- Natural History Museum: How are dinosaur fossils formed?, checked 31 Oct 2026. Used for 5 facts.
- Natural History Museum: Mary Anning, the unsung hero of fossil discovery, checked 31 Oct 2026. Used for 4 facts.
Each source was checked on the date shown. We write facts in our own words and link to the page each one comes from.