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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