Superclass Pisces (fishes and fishlike animals). Class Agnatha (jawless fish like lampreys .... We will discuss the anatomy and physiology of the phylum ...
THE VERTEBRATES. Chordates (phylum Chordata) are deuterostome coelomates whose nearest relatives in the animal kingdom are the echinoderms, the only other deuterostomes. However, unlike echinoderms, chordates are characterized by a notochord, jointed
Argumentează ipoteza originii vertebratelor în nevertebrate. 4. Folosesc caracterele morfologice pentru a clasifica taxonii din filumul Chordata. 5
