Small to medium size reptiles from the late Triassic to Jurassic periods (around 200 million-years-ago) that show a mammalian style jaw with signs of occlusion between the teeth. The teeth are reptilian in shape and size, but scrape against each other instead of not touching each other like normal reptilian teeth.
Trithledont Term Timeline in Your Inner Fish
The timeline below shows where the term Trithledont appears in Your Inner Fish. The colored dots and icons indicate which themes are associated with that appearance.
Chapter 4: Teeth Everywhere
...patches of sandstone that protected the fossils from the volcanic heat. They find several more trithledonts, which provide valuable clues to the progression from reptilian teeth to mammalian teeth. Though trithledonts... (full context)