1. The admedian teeth of the radula have denticles.

2. The radula of this species bears serrated teeth.

3. Hidden under a slug’s tentacles is the mouth, which opens to release a radula.

4. Conchology, conchiliometry and soft-part morphology, including jaw, radula, reproductive and pallial systems are provided.

5. The Chiton’s mouth has a tongue-like structure called a radula, which has numerous rows of about 17 teeth each.

6. A Cephalopod is also characterized by a horny beak secreted by the walls of the buccal cavity, and a radula within the buccal cavity

7. Six new pairs of bibenzyl-based meroterpenoid enantiomers, (±)-rasumatranin A-D (1-4) and (±)-radulanin M and N (5 and 6), and six known compounds were isolated from the Adnascent Chinese liverwort, Radula sumatrana

8. Elongate, Carinate, rounded anteriorly and posteriorly, with posteroventral body lobe; sclerites in single layer, raised, mainly rimmed scales and flattened rods; cuticle thinner than epidermis; mouth opening not separate from vestibule opening; pedal pit glands massive, meeting middorsally; radula monostichous.