FISSURELLA

CLASSIFICATION OF FISSURELLA

PHYLUM :- MOLLUSCA (Unsegmented bilaterally symmetrical and provided with visceral mass, foot and mantle. )

CLASS :- GASTROPODA (Visceral hump twisted.)

SUB-CLASS :- PROSOBRANCHIATA (Gills in front of heart.)

ORDER :-  ASPIDOHRANCHIATA (Gills bipectinate.)

SUB-ORDER :- RHIPIDOGLOSSA (Ctenidia and auricles paired.)

GENUS :- Fissurella

GEOGRAPHICAL DISTRIBUTION

  • Found in U.S.A.

HABIT AND HABITAT

  • Fissurella is a marine gastropod found attached with rocks.

FISSURELLA

GENERAL CHARACTERSTICS OF FISSURELLA

  • Commonly called as Key-hole limpet. 
  • Shell is oval, compressed, non-spiral and having a small apical shell aperture which looks little volcanic crater.
  • Shell protects the animal from the impacts of the waves. 
  • Ventral foot is large, sole-like and is used as sucker for clinging to rocks. 
  • Foot bears on either side an epipodial ridge bearing a row of cirri or epipodial tentacles. 
  • Operculum is absent. 
  • Head contains mouth or apical shell aperture and pair of sensory tentacles.
FISSURELLA

IDENTIFICATION

  • The animal contains epipodial tentacles and all above features it is Fissurella.

FISSURELLA
FISSURELLA
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