Multiple Knightia Fish woolly mammoth teeth These prehistoric echinoderms are preserved

These prehistoric echinoderms are preserved on a gritty micaceous siltstone

Height 36cm

Width 45cm Height 40cm Depth 40cm

Most commonly formed in volcanic regions where lava flows have left gas bubbles in rock

Very decorative pair of bookends

Multiple Knightia Fish woolly mammoth teeth These prehistoric echinoderms are preservedA mini 'shoal' of fossilised Knightia fish in a limestone matrix, found in Fossil Lake, Wyoming, USA. The unusual chemistry of this region has led to Fossil Lake having the highest concentration of articulated fish fossils anywhere in the world, hence a collection of fish on one piece of limestone. This species is thought to be distantly related to modern day herrings and sardines. Eocene age, circa 50 million years old. Each full fish is approximate