An Enchodus dentition plate or tooth plate of approximately 66 to 72 million years of age - Maastrichtian age in the Upper Cretaceous period. This species of fish are well known for their spear like teeth, in fact they are often referred to as "the Sabre - toothed herring" and their teeth are highly sought after by fossil collectors. The dentition plate is a region of the mouth which regenerates new spear like teeth when old ones are lost or broken. Their sharp, spear like teeth were perfect for penetrating and holding onto smaller prey animals such as small fish or cephalopods like squid. Enchodus fish appear to be closely related to salmon and existed in the late Cretaceous period through to early Eocene. These particular dentition plates are approximately 3 cm long and are supplied in a small plastic bag with an information label.