Classification of the genus Petasisquama
G. †Petasisquama Allison and Hilgert 1986
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†Petasisquama alta Allison and Hilgert 1986
†Petasisquama laciniata Allison and Hilgert 1986
†Petasisquama petasus Cohen and Knoll 2012
†Petasisquama versicorona Allison and Hilgert 1986