Dichotomous Key/Mollusca

Dichotomous Key: Mollusca Kingdom: Animalia Phylum: Mollusca Information related to Mollusca Wikipedia Wikispecies Wikicommons

Parent key: Animalia Phyla Mollusca Key: Mollusca Mollusca {{{6}}}

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

• Torsion
  • Present - Gastropoda
  • Not present - 3

3

• Presence of chromatophores - Can the animal change color?
  • Yes - Cephalopoda
  • No - 4

4

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

5

• Segmentation
  • Yes, primitive - Monoplacophora
  • No - 6

6

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

7

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