Dichotomous Key/Cephalopoda

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Dichotomous Key
Cephalopoda
Kingdom Animalia
Phylum Mollusca
Class Cephalopoda

1

2: Coleoidea

  • Modified (or lost) arm pair
    • Arm pair IV - 3
    • Arm pair II - 4
Mollusca keys
Classes
Aplacophora | Bivalvia | Caudofoveata | Cephalopoda | Gastropoda | Monoplacophora | Polyplacophora | Scaphopoda

3: Decapodiformes

  • Cornea
    • Present - 6
    • Not present - 5

4: Octopodiformes

5

6: Sepioidea

  • Cuttlebone

7

8: Sepiolida

9

10

  • Branchial canals in gills
    • Present - 11
    • Not present - 9

11: Bathyteuthoida