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Hadrosaur Teeth
...they chewed and chewed
Size given
for maximum dimension
Hadrosaurs were the ultimate chewers. Estimates of up to 800 teeth were growing in their jaws. Up to 100 teeth were actually on the chewing surface! These batteries of teeth wore down quickly on a diet of conifers and other 'tough'Cretaceous plants. New teeth broke the surface to replace shed teeth.  
3.5cm
5cm
Corythosaurus Gryposaurus
4cm
4cm
Kritosaurus
Edmontosaurus
Who is who? the above skull of  Edmontosaurus represents one of many hadrosaur species.  Isolated teeth, as the 4 above, are difficult to identify to species level. These identifications are tentative. Age of deposits and formations help with an 'educated guess'.
This Hadrosaur jaw section illustrates the flat chewing surface. These  teeth have been ground  flat by a diet of tough, woody vegetation such as conifers
@ J. LeBlanc 15cm
These teeth are on the 'lingual' surface (facing the interior). Empty 'slots' on the bottom contained unformed teeth that have eroded from jaw fragment.
Teeth in jaw fragment. These teeth are arranged in rows. They never reached the chewing surface before the death of the Hadrosaur. If eroded out of the jaw fragment they would appear unworn
14 cm
Hadrosaur jaw section showing chewing surface. Dental foramnifera allowed passage of blood and nerve vessels. Intact 'lingual plate' covers  unerupted batteries of teeth.
Hadrosaur. Jaw section with tooth channels. This is how jaw sections are usually found...minus the teeth and with eroded lingual plate (see above specimen).
12 cm
Worn teeth from a variety of  Hadrosaur species
View of chewing  surfaces of shed Hadrosaur teeth. 
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Cretaceous room
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