Image Gallery: A Variety of Fossils

Mineralised fossils are formed when organic matter in remains is gradually replaced with minerals, ultimately turning the remains to ‘rock’. See some examples in this gallery.

Trace fossil: trilobite tracks Trace fossil: trilobite tracks
Trace fossil: marine invertebrate burrows Trace fossil: marine invertebrate burrows
Trace fossil: ichthyosaur coprolite, internal Trace fossil: ichthyosaur coprolite, internal
Trace fossil: ichthyosaur coprolite, external Trace fossil: ichthyosaur coprolite, external
Preservation of organic matter: insects in amber Preservation of organic matter: insects in amber
Preservation of organic matter: bony fish Preservation of organic matter: bony fish
Preservation of organic matter: seed fern Preservation of organic matter: seed fern
Impression fossil: trilobite, internal Impression fossil: trilobite, internal
Impression fossil: ammonite, internal Impression fossil: ammonite, internal
Impression fossil: armoured fish, external Impression fossil: armoured fish, external
Impression fossil: bark, external Impression fossil: bark, external
Mineralisation: pyritised ammonite Mineralisation: pyritised ammonite
Mineralisation: ichthyosaur jaw Mineralisation: ichthyosaur jaw
Mineralisation: opalised mussel shell Mineralisation: opalised mussel shell
Mineralisation: dinosaur thigh bone Mineralisation: dinosaur thigh bone
Mineralisation: petrified wood Mineralisation: petrified wood