A rare partial dorsal spine of the primitive Acanthodian shark Gyracanthus Formosus from the coal measures of Shropshire. Ex. Victorian collection, with original label and presented in a glass-topped box.
Location: Coalbrookdale, Shropshire, England
Age: Carboniferous, Namurian - 320 million years old
Measurements: Spine (7.2cm across)
Weight: 60.23g