Classification of the genus Syringothyris
G. †Syringothyris
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†Syringothyris afghanica Plodowski 1968
†Syringothyris arctica Whitfield 1908
†Syringothyris curzoni Diener 1903
†Syringothyris cuspidata Martin 1796
†Syringothyris lydekkeri Diener 1899
†Syringothyris subcuspidatoides Plodowski 1968