CLASSIFICATION OF PROTODRILUS

PHYLUM :- ANNELIDA (Metamerically segmented, coelomate and laterally symmetrical. )

CLASS :- ARCHINNELIDA (Primitive annelids.)

FAMILY :- PROTODRILIDAE (Long tentacles.)

GENUS :- Protodrilus

GEOGRAPHICAL DISTRIBUTION

  • It is found in inland sea, lake at Faro near Messina, U.S.A.

HABIT AND HABITAT

  • Protodrilus is a small marine worm.

PROTODRILUS

GENERAL CHARACTERSTICS OF PROTODRILUS​

  • Animals live in sand.
  • Body is narrow, elongated, cylindrical and thread-like. 
  • Prostomium of head is small and bears a pair of long tentacles called as prostomial ciliated tentacles.
  • Peristomium is large and contains a pair of sensory ciliated pits.
  • External segmentation is marked by ciliated rings bearing circlet of cilia.
  • Setae, parapodia and gills are absent. 
  • Protodrilus is hermaphroditic. 
  • Development is direct.
PROTODRILUS

IDENTIFICATION

  • contains a pair of ciliated tentacles arid all above features, hence it is Protodrilus.

PROTODRILUS
PROTODRILUS
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