Large 82mm rainbow iridescent Caloceras display ammonite fossil 50 An unusual and interesting snapshot

An unusual and interesting snapshot of life on the seafloor 200 hundred million years ago

The detail in the worm casts is fantastic and you can even see the openings where the worms would have extended their feeding parts out of the shell

8 inches) across and contains two ammonites

The ribs are usually worn away in this species

Large 82mm rainbow iridescent Caloceras display ammonite fossil 50 An unusual and interesting snapshotA stunning example of an iridescent ammonite fossil of the species Caloceras johnstoni from North Somerset, UK. The matrix measures 143 mm (5. 65 inches) tall and the ammonite measures 82 mm (3. 2 inches), which is large for this species. The ammonite sits in the original limestone matrix in which it was found that has been shaped and has a cut flat base to allow it to be displayed freely standing. The ammonite is very well preserved and has been