Classification of the genus Tylothyris
G. †Tylothyris North 1920
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†Tylothyris brevaurita Carter 1967
†Tylothyris mesacostalis Hall 1867
†Tylothyris minima Campbell and Engel 1963
†Tylothyris missouriensis Weller 1906
†Tylothyris multicostatus Maxwell 1964
†Tylothyris novamexicana Stainbrook 1947
†Tylothyris pauciplicata Yang 1986