Remarkably, fossil shark teeth are also incredibly abundant. Sharks ruled the earth's oceans for 400 million years, and every individual grows and sheds thousands of teeth in their lifetime.

The shark-face was made famous early in the war ... An Illustrated Guide By Jean-Denis G.G. Lepage - 2009 Warbirds of World War II Jeffrey L Ethell - 2013 Aircraft Nose Art From World War I ...