👉 Thamnodontus is a genus of extinct mammals from the Late Cretaceous period, which spanned approximately 65 million years ago and was part of the Late Triassic (Middle Jurassic) period. These creatures are known for their distinctive features such as large, elongated teeth, long necks, and bony plates covering their limbs. They were primarily herbivores and lived in shallow to mid-oceanic environments like the Caribbean.