(1) They were called the chordates, and started a momentous chain of evolutionary events.

(2) A chordate marine animal of the subphylum a tunicate.

(3) The snake belongs to chordate phyla, vertebrate, reptile, squamata, serpents, in the animal kingdom.

(4) Beginning. This genus is considered a chordate , and the phylum Chordata includes fish, mammals and man.

(5) The middle zone of the mesoderm of a chordate vertebrate embryo, from which excretory tissue develops.

(6) A chordate marine animal of the subphylum Urochordata; a tunicate.

(7) The invertebrate chordate pharyngeal endostyle is the homolog of the vertebrate thyroid gland.

(8) Instead, they are the result of what happens when you fuse an ancient chordate with the ancestor of a sea urchin .

(9) The origin of vertebrates has always been a core question in evolutionary biology. It is well accepted that vertebrates and invertebrate chordate derived from a common ancestor.