| 1 | The crocodile is a general term of animals of Crocodilia, Reptilia, which have high economic and medical value. | |
| 2 | Chordates that lack a backbone, such as sea potatoes, sea peaches, and sea squirts. | |
| 3 | Beginning. This genus is considered a chordate , and the phylum Chordata includes fish, mammals and man. | |
| 4 | The invertebrate chordate pharyngeal endostyle is the homolog of the vertebrate thyroid gland. | |
| 5 | The crocodile is a general term of animals of Crocodilia, Reptilia, which have high economic and medical value. |