Biology/Zoology Lab Help
A return to a radiate form: Echinodermata
| Species | Pharyngeal slits | Adult dorsal nerve cord | Jaws | Bony skeleton | Eyes | Gills | Teeth | Deuterostome | Closed circulatory system | Complete digestion system | Total | |||
| Urochordata
Tunicates |
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 3 |
| Placoderms
Jawed fish |
1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 10 |
| Myxini
Hagfish |
1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 8 |
| Cephalochordata
Lancelets |
1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 6 |
| Chondrichthes
Shark |
1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 11 |
| Petromyzontidae
Lamprey |
1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 9 |
| Ostracoderms
Jawless fish |
1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 8 |
| Actinopterygii
Most fish |
1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 12 |
| Sarcopterygii
Coelocanth |
1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 12 |
| Echinoderm
Star fish |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 2 |
