Classification of Ivanov 2005

Or. †Symmoriida Zangerl 1981
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Invalid names: Denaeidae Berg 1940 [empty]
Or. †Synechodontiformes Duffin and Ward 1993
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Fm. †Palaeospinacidae Regan 1906
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G. †Synechodus Woodward 1888
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†Synechodus antiquus Ivanov 2005