Classification of the order Isospondyli

Or. †Isospondyli Cope 1887
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G. †Oeonoscopus Costa 1864
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†Oeonoscopus elongatus Eastman 1911
†Oeonoscopus petraroiae Costa 1864
G. †Oligopleurus Thiollière 1850
G. †Proballostomus Cope 1891
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Fm. †Cyclolepidae David 1946
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G. †Cyclolepoides David 1946
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Invalid names: Aplochitonidae [empty], Microstomidae [empty], Thymallidae [empty]
Invalid names: Notopteroidei [empty], Pholidophoroidei [empty], Sauropsidae Cope 1877 [empty], Scyphophori [empty], Stomiatioidei [empty]