Thelodonti (from Greek: "nipple teeth") is a class of extinct Palaeozoic jawless fishes with distinctive scales instead of large plates of armor. There...

Class †Conodonta Class †Myllokunmingiida Class †Pteraspidomorphi Class †Thelodonti Class †Anaspida Class †Cephalaspidomorphi Infraphylum Gnathostomata (jawed...

? †Thelodonti, †Conodonta, †Anaspida...

Myxini (hagfish) Class Pteraspidomorphi † (early jawless fish) Class Thelodonti † Class Anaspida † Class Petromyzontida or Hyperoartia Petromyzontidae...

†Pteraspidomorphi †Thelodonti...

†Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida †Osteostraci...

The early and mid Silurian. See Kazlev MA, White T (March 6, 2001). "Thelodonti". Palaeos.com. Archived from the original on 2007-10-28. Retrieved October...

early and mid Silurian. See Kazlev, M.A., White, T. (March 6, 2001). "Thelodonti". Palaeos.com. Archived from the original on October 28, 2007. Retrieved...

aspidine, an acellular bony tissue unique to animals of this class and Thelodonti. The middle layer was honeycombed with tiny spaces called "cancella."...

†Protoconodonta? †Paraconodontida †Conodonta †Ostracoderms †Pteraspidomorphi †Thelodonti †Anaspida †Cephalaspidomorphi †Galeaspida †Pituriaspida †Osteostraci...