Teleostomi (from Greek τελεος, complete + Greek στόμα, mouth) is an obsolete taxon
Origins
The origins of the teleostomes are obscure. They are traditionally assumed to be descendants of the acanthodians ("spiny sharks") from the Early Silurian Period; however, more recent discoveries show that the "spiny sharks" are actually a paraphyletic assemblage leading to Chondrichthyes, and that placoderms like Entelognathus are more closely related to true bony fish.
However, most of the above synapomorphies can ultimately be found in several chondrichthyan groups.