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<==o Okamejei Ishiyama, 1958 |-- O. kenojei Müller & Henle, 1841 |-- O. meerdervoorti Bleeker, 1860 |-- O. powelli Alcock |-- O. philipi Lloyd, 1906 |-- O. hollandi Jordan & Richardson, 1909 |-- O. acutispina Ishiyama, 1955 |-- O. schmidti Ishiyama, 1958 |-- O. heemstrai McEachram & Fechhelm, 1982 |-- O. boesemani Ishiyama, 1987 |-- O. sp.1 [Last & Stevens, 1993] [West Australia] `-- O. sp.2 [Seret] [Indonesia]Reference(s):
Mould, B., 1995-1997: The nomenclature and distribution of the recent Elasmobranchii.
–iNet: http://ibis.nott.ac.uk/elasmobranch.html