Vertebrate tail section. Mesozoic Fossiliferous probably Cretaceous/Jurassic.. Measurements are 6"L x 4"W x 2.5"D, weight is 2.44 pounds. This fossil was found at a local flea market 15 years ago so, the owner I purchased it from had no additional information to provide. Is there any way to identify what vertebrate this fossil belongs to? It has a light coat of "museum wax" to help preserve it.