New And Precise Biology/Zoology Lab
New And Precise Biology/Zoology Lab
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 |
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