Classification of the genus Petalorhynchus
G. †Petalorhynchus Newberry and Worthen 1866
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†Petalorhynchus beargulchensis Lund 1989
Petalorhynchus distortus Saint John and Worthen 1875
†Petalorhynchus indicus Waagen 1879
Petalorhynchus pseudosagittatus Saint John and Worthen 1875
†Petalorhynchus psittacinus Agassiz 1843
Petalorhynchus spatulatus Saint John and Worthen 1875
Petalorhynchus striatus Newberry and Worthen 1866