''Ptychotrygon'' is a genus of
sawfish
Sawfish, also known as carpenter sharks, are a family of rays characterized by a long, narrow, flattened rostrum, or nose extension, lined with sharp transverse teeth, arranged in a way that resembles a saw. They are among the largest fish wi ...
-like
Late Cretaceous
The Late Cretaceous (100.5–66 Ma) is the younger of two epochs into which the Cretaceous Period is divided in the geologic time scale. Rock strata from this epoch form the Upper Cretaceous Series. The Cretaceous is named after ''creta'', the ...
ray whose fossils have been found worldwide. It, ''
Ptychotrygonoides'', ''
Texatrygon'', and ''
Asflapristis'' are members of the family
Ptychotrygonidae within the
suborder
Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...
Sclerorhynchoidei
Sclerorhynchoidei is an extinct suborder of rajiform rays that had long rostra with large denticles similar to sawfishes and sawsharks. This feature was convergently evolved and their closest living relatives are actually skates. While they ...
.
Species
The following species are considered valid:
* †''
Ptychotrygon blainensis''
* †''
Ptychotrygon eutawensis''
* †''
Ptychotrygon geyeri''
* †''
Ptychotrygon mcnultyi''
* †''
Ptychotrygon pustulata''
* †''
Ptychotrygon rostrispatula''
* †''
Ptychotrygon striata''
* †''
Ptychotrygon triangularis''
* †''
Ptychotrygon vermiculata''
References
Prehistoric cartilaginous fish genera
Late Cretaceous cartilaginous fish
Late Cretaceous fish of North America
Sclerorhynchoidei
Fossil taxa described in 1894
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