Dichotomous Key/Mollusca

Dichotomous Key: Mollusca
Kingdom: Animalia
Phylum: Mollusca
Information related to Mollusca
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Parent key: Animalia
Phyla
Mollusca
Key: Mollusca
Mollusca
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1

Animalia keys
Subkingdom
Agnotozoa
Phyla
Acoelomorpha | Cnidaria | Ctenophora | Myxozoa | Orthonectida | Placozoa | Porifera | Rhombozoa
Superphylum:Deuterostomia
Chaetognatha | Chordata | Echinodermata | Hemichordata
Superphylum:Ecdysozoa
Arthropoda | Kinorhyncha | Loricifera | Nematoda | Nematomorpha | Onychophora | Priapulida | Tardigrada
Superphylum:Lophotrochozoa
Annelida | Brachiopoda | Ectoprocta | Entoprocta | Mollusca | Nemertea | Phoronida | Sipuncula
Superphylum:Platyzoa
Acanthocephala | Cycliophora | Gastrotricha | Gnathostomulida | Micrognathozoa | Platyhelminthes | Rotifera
  • Presence of a foot or derived organ
    • Yes - 2
    • No - Aplacophora (subclass Chaetodermomorpha)

2

3

  • Presence of chromatophores - Can the animal change color?

4

  • Shell divided into plates
    • Yes - Polyplacophora
    • No - 5

5

  • Segmentation
    • Yes, primitive - Monoplacophora
    • No - 6
Mollusca keys
Classes
Aplacophora | Bivalvia | Caudofoveata | Cephalopoda | Gastropoda | Monoplacophora | Polyplacophora | Scaphopoda

6

  • Presence of captacula
    • Yes - Scaphopoda
    • No - 7

7

  • Shell
    • Two parts - Bivalvia
    • One part - Aplacophora
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