Sauroniops Posted May 12, 2020 Share Posted May 12, 2020 Hello there. I recently received a small theropod tooth from the Morrison Formation, without any ID. Part of the tip is missing/worn out. At its longest dimension, the tooth measures 1,1 cm. The serration count (Both mesial and dermal) are 6-7 serrations per mm, and about 18-19 per 3 mm. Anyone who's got a good guess, feel welcome to drop a comment here, cause I have no clue if this is a baby Allosaurus, or a small Marshosaurus, Ornitholestes, Coelurus or something completely different. 1 Link to comment Share on other sites More sharing options...
Sauroniops Posted May 12, 2020 Author Share Posted May 12, 2020 1 Link to comment Share on other sites More sharing options...
thelivingdead531 Posted May 12, 2020 Share Posted May 12, 2020 @Troodon will be able to help. Link to comment Share on other sites More sharing options...
Darktooth Posted May 12, 2020 Share Posted May 12, 2020 18 minutes ago, thelivingdead531 said: @Troodon will be able to help. And he probably will want to see a pic with a view of the bottom of the tooth. 1 I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
thelivingdead531 Posted May 12, 2020 Share Posted May 12, 2020 2 minutes ago, Darktooth said: And he probably will want to see a pic with a view of the bottom of the tooth. You are definitely right. I should have stated that first. Link to comment Share on other sites More sharing options...
Darktooth Posted May 12, 2020 Share Posted May 12, 2020 Just now, thelivingdead531 said: You are definitely right. I should have stated that first. We will let it slide this time. I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
Sauroniops Posted May 12, 2020 Author Share Posted May 12, 2020 Here's a pic from above/root Link to comment Share on other sites More sharing options...
thelivingdead531 Posted May 12, 2020 Share Posted May 12, 2020 12 minutes ago, Darktooth said: We will let it slide this time. Thank you, kind sir. Your generosity knows no bounds. Link to comment Share on other sites More sharing options...
dinosaur man Posted May 12, 2020 Share Posted May 12, 2020 Looks like a small Allosaurus tooth, from the photos the Distal serrations seem larger then the mesial, even though they have the same count the Distal serrations can still be bigger. But yet again I’m still learning to ID teeth like this, so @Troodon. Cool tooth! 2 Link to comment Share on other sites More sharing options...
Troodon Posted May 12, 2020 Share Posted May 12, 2020 How far down does the carina come on the outside edge? Link to comment Share on other sites More sharing options...
Sauroniops Posted May 12, 2020 Author Share Posted May 12, 2020 1 hour ago, Troodon said: How far down does the carina come on the outside edge? The distal carina seems to go all the way. The mesial carina however seems to stop right before the little chipped off part of the tooth (As seen on the last picture I sent). So the mesial carina starts a little further down compared to the distal. 1 Link to comment Share on other sites More sharing options...
Troodon Posted May 12, 2020 Share Posted May 12, 2020 Its definitely not Marshosaurus or a Ceratosaurid. Given that the serration density is the about the same, its shape, I would lean toward it being an Allosaurid. 3 Link to comment Share on other sites More sharing options...
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