Definition: Triconodonty is a type of invertebrate that consists of three distinct segments, or "tricones," arranged along a central axis. These segments are often referred to as the "tricon" because they resemble three interconnected cylinders, similar to how a cylinder resembles three identical cylinders. Triconodonts have an evolutionary history that spans from the Paleogene to the present day, with their fossils being found in various parts of the world.