Classification of the genus Rugatia
G. †Rugatia Muir-Wood and Cooper 1960
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†Rugatia andersoni Stehli and Grant 1970
†Rugatia convexa Cooper and Grant 1975
†Rugatia costiformis Chang 1987
†Rugatia incurvata King 1931
†Rugatia intermedia Hoover 1981
†Rugatia mckeei Cooper and Grant 1975
†Rugatia occidentalis Newberry 1861
†Rugatia paraindica McKee 1938