Helicoprion, whorl-tooth shark #464 cast replica Cave Lion The specific name honours Alfred

The specific name honours Alfred von Zittel

1906–July 12

Lapis lazuli

This print shows an opposable big toe common to all apes

When Nanotyrannus was first discovered many scientists insisted it was a young T-rex

Helicoprion, whorl-tooth shark #464 cast replica Cave Lion The specific name honours AlfredHelicoprion, whorl tooth shark #464 Helicoprion ("Spiral Saw") was a long lived genus of shark like cartilaginous fish that first arose in the oceans of the late Carboniferous, survived the Permian Triassic Extinction Event, and eventually went extinct during the early Triassic. The only fossils known are the teeth, which were arranged in a fantastic "tooth whorl" strongly reminiscent of a circular saw. It was not until the discovery of the skull of a