A specimen of a common nonvenomous genus such as Thamnophis, this large, unmounted snake skull is ideal for up-close examination; its hinged jaws can ...
Genetic Dice are designed to model the allelic frequency found in the human ABO blood group system (based on common types found in North America), and...
The skull of a white-tail deer, Odocoileus virginianus, will be from a doe or young buck. It shows the cypical structure of the wild Cervid, which may...
The impressive, unmounted skull of castor canadiensis, the largest North American rodent, shows the enlarged incisors that enable the beaver to fell t...
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