Phylum Arthropoda

Phylum Arthropoda

Phylum Arthropoda
Arthropods
Physical Features
Metamorphosis
Habitat
Value

Subphylum Trilobita (4000 species)*
Trilobites
Subphylum Chelicerata
- Class Merostomata (2 orders, 204 species)
- Class Arachnida (70750 species)
  Scorpions, Spiders, Ticks, Mites
- Class Pycnogonida (8+ families, 25+ species, 600+ species)
  Sea Spiders
Subphylum Crustacea (10 classes, 44000 species)
- Class Cephalocarida
- Class Branchiopoda (2 subclasses, 3 orders, 900 species)
- Class Enantiopoda*
- Class Remipedia (2 families, 6 genera, 11 species)
- Class Maxillopoda
- Class Malacostraca (22000 species)
- Class Crustacea
  Crustaceans
Subphylum Uniramia
- Class Chilopoda (2500 species)
  Centipedes
- Class Symphyla (160 species)
- Class Diplopoda (10000 species)
  Millipedes
- Class Pauropoda (500 species)
- Class Insecta (751000 species)
  Insects

*extinct

[ RA] { EB}

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