After Paul, 1988 and Molnar, Kurzanov & Dong, 1990

Allosaurus Marsh, 1877b
        †Antrodemus Leidy, 1870 [nomen dubium]
        †Poicilopleuron Leidy, 1870 [nomen dubium]
        †Laelaps Cope, 1877 [nomen dubium]
        †Creosaurus Marsh, 1878a
        †Hypsirophus Cope,
        ?†Labrosaurus Marsh, 1884a
        †Epanterias Cope, 1878b

    ?†A. sp. [Australia, so called “Polar allosaur”]

    ?†A. sp. cf. ?A. atrox [Portugal]

    †A. tendagurensis Janensch, 1925 (afrikanallosaurus)

    †A. fragilis Marsh, 1877b
        †Poicilopleuron valens Leidy, 1870 [nomen dubium]
        †Laelaps trihedrodon Cope, 1877 [nomen dubium]
        †Hypsirophus discurus Cope,
        †Allosaurus lucaris Marsh, 1878a [in partim]
        †Allosaurus ferox Marsh, 1896
        ?†Labrosaurus ferox Marsh, 1884a

    †A. atrox (Marsh, 1878a) sensu Paul, 1988
        †Creosaurus atrox Marsh, 1878a

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