Order6:- PHILILNOGLOSSACEA
1) They are minute naked snail.
2) They do not have head appendages.
3) They do not have gills..
4) They have visceral mass separated from the foot
only by a shallow groove.
Example:- Philinoglossa.
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| Philinoglossa |
Order7:- SACCOGLOSSA
1)They may be with or without shell.
2) They have suctorial type of Pharynx.
3) They have closed type of sperm duct.
4) They have Parapodia and cerata.
Example:- Oxynoe.
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| oxynoe |
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| oxynoe |
Order8:-NOTASPIDEA
1)They may or may not have shell.
2) They donot have Parapodia.
3) They have bipectinate gills and ospharadium on the right side.
4) They have mantle but devoid of mantle cavity.
Examples:-Tylodina, Pleurobranchus.
 |
| Pleurobranchus. |
Note: -To read about bacteria go to thallophytes.blogspot.com
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