Taxon tree

Infraorder Anomura
Infraorder Brachyura
- Section Eubrachyura
  - Subsection Heterotremata
    - Superfamily Aethroidea
    - Superfamily Bythograeoidea
    - Superfamily Calappoidea
    - Superfamily Cancroidea
    - Superfamily Carpilioidea
    - Superfamily Cheiragonoidea
    - Superfamily Corystoidea
    - Superfamily Dairoidea
    - Superfamily Dorippoidea
    - Superfamily Eriphioidea
    - Superfamily Gecarcinucoidea
    - Superfamily Goneplacoidea
    - Superfamily Hexapodoidea
    - Superfamily Hymenosomatoidea
    - Superfamily Leucosioidea
    - Superfamily Majoidea
    - Superfamily Orithyioidea
    - Superfamily Palicoidea
    - Superfamily Parthenopoidea
    - Superfamily Pilumnoidea
    - Superfamily Portunoidea
    - Superfamily Potamoidea
    - Superfamily Pseudothelphusoidea
    - Superfamily Pseudozioidea
      - Family Christmaplacidae
      - Family Pilumnoididae
      - Family Planopilumnidae
        
        Genus Haemocinus
        
        Genus Planopilumnus
        
        Genus Platychelonion
        
        Species Platychelonion planissimum
        
        Genus Rathbunaria
      - Family Pseudoziidae
    - Superfamily Retroplumoidea
    - Superfamily Trapezioidea
    - Superfamily Trichodactyloidea
    - Superfamily Trichopeltarioidea
    - Superfamily Xanthoidea
  - Subsection Thoracotremata
- Section Podotremata

Platychelonion

Genus, Crosnier & Guinot, 1969