Type: White River Mammal "end gnawing".
Fossil Size: approx 2" x 1.5"
This fossil bone shows signs of bite and gnaw marks that were fossilized. These marks were made before the bone was fossilized and would be made soon after the animals death or even the cause of their death. Different kinds of bites can leave different traces on the bone, as well as different kinds of teeth. Fine detailed analysis can help us understand exactly how these marks were made and by what type of animal. For example; teeth with denticles (small tooth-like projections) can often leave drag traces from the denticles on the bone after biting and dragging, which can only be made by dentices or serrated teeth. Many therapod dinosaurs have denticles. Addictionally, different bite traces can indicate different behaviors such as gnawing. Mammalian gnawing leaves very distinct traces on the bonrs that are not produced by other means. Bute traces can range from punctures (when the tooth breaks through the bone cortex) and pits (a single vertical bite with no cortical breakage), to scores and drags caused when the animal bites and drags it's teeth across the bone. Unfortunately, determining the exact predator can be extremely difficult, if not impossible in many cases. Generally, we can narrow it down to "therapod", "crocodile", "mammal", etc.