Icthology study of fish. Phylum Chordata Subphylum Vertebrata –Superclass Agnatha (jawless) Class mixini – hagfish Class cephalaspidomorphi –
Jawless Fishes. Review of Chordates (fig. 7.51) Table 7.1 dorsal hollow nerve cord notochord (dorsal, elastic supporting rod) paired pharyngeal gill slits.
Jawless Fish Phylum: Chordata Sub-Phylum: Vertebrata Class: Agnatha.
