Dichotomous Key/Hirudinea
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Dichotomous Key: Annelida | |||||||
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1[edit | edit source]
- Reversible proboscis
- Present - #3: Rhynchobdellae
- Not present - #2:Arhynchobdellae
2[edit | edit source]
- Teeth
- Present - Gnathobdellae
- Not present - Pharyngobdellae
3: Rhynchobdellae[edit | edit source]
- Body shape
- Flat - Glossiphoniidae
- Cylindrical - Pisciolidae