-Andy- Posted January 14, 2018 Share Posted January 14, 2018 Hi all, I have a group of dinosaur teeth that needs identifying. They are either triceratops or hadrosaur teeth. They come from Hell Creek Formation of Powder County, Montana. All the teeth are roughly 1.5 cm tall 1) I am guessing hadrosaur 2) I am guessing triceratops 3) I am guessing triceratops 4, 5, 6) These 3 are extremely similar. I can't tell what they are. Looking forward to meeting my fellow Singaporean collectors! Do PM me if you are a Singaporean, or an overseas fossil-collector coming here for a holiday! Link to comment Share on other sites More sharing options...
Troodon Posted January 14, 2018 Share Posted January 14, 2018 Andy they are all Ceratopsian spitters Link to comment Share on other sites More sharing options...
Rockwood Posted January 14, 2018 Share Posted January 14, 2018 5 minutes ago, Troodon said: spitters Worn out teeth that have been shed. Link to comment Share on other sites More sharing options...
Troodon Posted January 14, 2018 Share Posted January 14, 2018 27 minutes ago, Rockwood said: Worn out teeth that have been shed. yes the industry calls them spitters Link to comment Share on other sites More sharing options...
Troodon Posted January 14, 2018 Share Posted January 14, 2018 Andy see if I can help you ID these type of teeth in the future. First take a look at hadrosaur teeth with roots on them, long and narrow and delicate. No bone around the enamel crown area and the tip of the tooth typically is adjacent to another tooth. The root is also brittle and hollow in the center so it rarely take odd shapes you see on ceratopsian teeth. The crowns are very shallow although some may have high center ridges they don't typically wear to see those big triangles on your column #4 to #6. Hadrosaur spitters are usually very small with a center ridge and flat on both sides and look like a hadro tooth. I'm sure there are exceptions Ceratopsian teeth are much more robust and have bone around the base of the crown. The arrow points to what I call a beard, you see it in a number of your teeth including the bottom two of column 1. The back of the crown is typically deep, with some enamel, and can take those odd spitter shapes. The crown also has a much higher center ridge that helps form those triangular shapes. Most spitters you see belong to Ceratopsians. Link to comment Share on other sites More sharing options...
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