Classification of Ager 1954
G. †Gibbirhynchia Buckman 1917
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†Gibbirhynchia amalthei Quenstedt 1852
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Invalid names: Rhynchonella dysonymus Seebach 1864 [synonym], Rhynchonella liasica Reynes 1868 [synonym]
†Gibbirhynchia gibbosa Buckman 1917
†Gibbirhynchia micra Ager 1954
†Gibbirhynchia muirwoodae Ager 1954
†Gibbirhynchia northamptonensis Davidson 1878
†Gibbirhynchia thorncombiensis Buckman 1922
†Gibbirhynchia tiltonensis Ager 1954