From publisher blurb:
A prehistoric campaign primer, for DMs and players alike.
Primal contains everything you need to introduce prehistoric creatures into your fantasy 5E settings. This 92-page primer introduces a miniature setting with lore to use as is or as inspiration, as well as 50 stat blocks for everything from the most popular dinosaurs to ancient, primal champions. New mechanics for taming, mounting, and riding are also included to give you a new way to interact with these creatures. For players, a new class—The Wrangler—allows you to tame and control them. Also included are 3 new subclasses, for the classes you already love to play.
Features:
A miniature setting with lore
50 prehistoric stat blocks
New mechanics for taming, mounting, and riding creatures
A new class, The Wrangler, complete with 3 subclasses
3 new subclasses for the classes you already love