Corn?

[amazongirl]

Matt- are you sure this is true for the Potamotrygonidae? I've looked at many jaws, alive and during necropsy and they are quite different from a cownose jaw and the teeth aren't plated in the same way. I watch my animals very closely and have never seen this in the family....

 

[Zoodiver]

It's been awhile. I was thinking they have the same set up, just really small plates. You'd be a better source than I am. I've touched a FW ray in over two years.

 

[Zoodiver]

So I went back and looked into it more. It looks like Potamotrygon spp are closer to the marine Dasyatis mouth/tooth structure. They lock together more like denticles than the elongated 'teeth' / 'plates' I posted pics of. They still shed them, but the shed 'teeth' are so small you'd probably never see them.

 

[Energy]

So I went back and looked into it more. It looks like Potamotrygon spp are closer to the marine Dasyatis mouth/tooth structure. They lock together more like denticles than the elongated 'teeth' / 'plates' I posted pics of. They still shed them, but the shed 'teeth' are so small you'd probably never see them.

Thanks for checking into that and clarifying. Still would be interesting to see a shed rays tooth-anyone have a pic of a freshwater ray tooth?