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| Kingdom Animalia | 
|  | Allopetrolisthes Haig, 1960 – invalid | 
|  | Clastotoechus Haig, 1960 – valid | 
|  | Liopetrolisthes Haig, 1960 – invalid | 
|  | Megalobrachium peruvianum Haig, 1960 – valid | 
|  | Neopisosoma Haig, 1960 – valid | 
|  | Neopisosoma bicapillatum Haig, 1960 – valid | 
|  | Neopisosoma dohenyi Haig, 1960 – valid | 
|  | Pachycheles calculosus Haig, 1960 – valid | 
|  | Pachycheles crinimanus Haig, 1960 – valid | 
|  | Pachycheles subsetosus Haig, 1960 – valid | 
|  | Pachycheles trichotus Haig, 1960 – valid | 
|  | Pachycheles velerae Haig, 1960 – valid | 
|  | Petrolisthes artifrons Haig, 1960 – valid | 
|  | Petrolisthes cocoensis Haig, 1960 – valid | 
|  | Petrolisthes galapagensis Haig, 1960 – valid | 
|  | Petrolisthes lewisi austrinus Haig, 1960 – invalid | 
|  | Petrolisthes nobilii Haig, 1960 – valid | 
|  | Petrolisthes platymerus Haig, 1960 – valid | 
|  | Petrolisthes tonsorius Haig, 1960 – valid | 
|  | Polyonyx confinis Haig, 1960 – valid | 
|  | Porcellana corbicola Haig, 1960 – invalid | 
        
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