|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Chondrichthyes - Sclerorhynchiformes - Ptychotrygonidae
It was assigned to Sclerorhynchidae by Herman (1975); to Batoidea by Case (1978); to Batoidei by Case and Schwimmer (1988); to Galeomorphii by Sepkoski (2002); and to Ptychotrygonidae by Kriwet et al. (2009).
|Year||Name and author|
|1974||Ptychotrygon eutawensis Meyer|
|1974||Ptychotrygon mcnultyi Meyer|
|1975||Ptychotrygon Herman p. 296|
|1978||Ptychotrygon Case p. 197|
|1988||Ptychotrygon Case and Schwimmer p. 295|
|2002||Ptychotrygon Sepkoski, Jr.|
|2009||Ptychotrygon Kriwet et al. p. 333|
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.