Classification of the genus Ornithella
G. †Ornithella
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Subg. †Ornithella (Delmontanella) Sulser 1995
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†Ornithella (Delmontanella) delmontana Oppel 1857
†Ornithella blumbergensis Seifert 1963
†Ornithella boxensis Muir-Wood 1936
†Ornithella curticensis Crickmay 1933
†Ornithella digonoides Buckman 1913
†Ornithella douvillei Rollier 1919
†Ornithella expolita Seifert 1963
†Ornithella gemina Crickmay 1933
†Ornithella jomdaensis Xu 1978
†Ornithella longa Seifert 1963
†Ornithella moeschi Mayer 1867
†Ornithella pseudolagenalis Moesch 1867
†Ornithella sichuanensis Xu 1978
†Ornithella skidegatensis Whiteaves 1876
†Ornithella syringothyrides Crickmay 1933
Invalid names: Microthyridina Schuchert and LeVene 1929 [synonym]