Name: Cionodon ‭(‬column tooth‭)‬.
Phonetic: Sy-on-o-don.
Named By: Edward Drinker Cope‭ ‬-‭ ‬1874.
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Ornithopoda,‭ ‬Hadrosauridae.
Species: C.‭ ‬arctatus‭ (‬type‭)‬,‭ ‬C.‭ ‬stenopsis.
Diet: Herbivore.
Size: Uncertain due to lack of remains.
Known locations: Canada,‭ ‬Alberta‭ ‬-‭ ‬Frenchman Formation.‭ ‬USA,‭ ‬Colorado‭ ‬-‭ ‬Laramie Formation.
Time period: Maastrichtian of the Cretaceous.
Fossil representation: Fragmentary remains.

       Cionodon is a dubious genus of hadrosaur that is based only upon very partial and fragmentary remains.‭ ‬So far two species of Cionodon continue to exist,‭ ‬but because of the poor quality of their fossils,‭ ‬it is next to impossible to assigned further remains to them,‭ ‬or even to identify them as synonymous with other genera.‭ ‬One former species,‭ ‬Cionodon kysylkumensis,‭ ‬is now often included as a species of Bactrosaurus.

Further reading
-‭ ‬On the transition beds of the Saskatchewan district.‭ ‬Proceedings of the Academy of Natural Sciences of Philadelphia‭ ‬27:2-3.‭ ‬-‭ ‬Edward Drinker Cope‭ ‬-‭ ‬1875.


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