After Schoch & Rubidge, 2005

Micropholis Huxley, 1859
        †Petrophryne Owen, 1876

        †Micropholis stowi Huxley, 1859
            †Micropholis stowii Huxley, 1859
            †Micropholis stowi Huxley; Owen, 1876
            †Petrophryne granulata Owen, 1876
            †Micropholis stowi Huxley; Zittel, 1890
            †Micropholis stowei Huxley; Lydekker, 1890
            †Micropholis stowi Huxley; Watson, 1913
            †Micropholis stowi Huxley; Abel, 1919
            †Micropholis stowi Huxley; Broili & Schröder, 1937
            †Micropholis stowi Huxley; Romer, 1947
            †Micropholis stowi Huxley; Bolt, 1974
            †Micropholis stowi Huxley; Boy, 1985
            †Micropholis stowi Huxley; Schoch & Rubidge, 2005

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