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Typical features: Radula<br />
Most molluscs have a radula (rasping<br />
tongue)<br />
The radula is ribbon-like and bears many<br />
small teeth arranged in rows<br />
Found in at least some representatives of<br />
all molluscan classes except Bivalvia<br />
Allowed early molluscs to graze on bacterial<br />
films on soft sediment?<br />
Now specialised to allow herbivory,<br />
detrivory and carniverous diets<br />
<strong>Mollusca</strong>
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