Names
| Valid name | Achelous ordwayi Stimpson, 1860 | 
| Synonym | Portunus (Achelous) ordwayi (Stimpson, 1860) | 
Classification
- 
                                            Animalia [kingdom]
                        Animals            - 
                                    Arthropoda [phylum]
                        Arthropods            - 
                                    Crustacea [subphylum]
                        - 
                                    Malacostraca [class]
                        - 
                                    Decapoda [order]
                        Shrimps, Lobsters and Crabs            - 
                                    Pleocyemata [suborder]
                        - 
                                    Brachyura [infraorder]
                        True Crabs            - 
                                    Portunoidea [superfamily]
                        - 
                                    Portunidae [family]
                        - 
                                    Achelous De Haan, 1833 [genus]
                        - 
                                    Achelous ordwayi Stimpson, 1860 [species]
                        
 
- 
                                    Achelous ordwayi Stimpson, 1860 [species]
                        
 
- 
                                    Achelous De Haan, 1833 [genus]
                        
 
- 
                                    Portunidae [family]
                        
 
- 
                                    Portunoidea [superfamily]
                        
 
- 
                                    Brachyura [infraorder]
                        True Crabs            
 
- 
                                    Pleocyemata [suborder]
                        
 
- 
                                    Decapoda [order]
                        Shrimps, Lobsters and Crabs            
 
- 
                                    Malacostraca [class]
                        
 
- 
                                    Crustacea [subphylum]
                        
 
- 
                                    Arthropoda [phylum]
                        Arthropods            
