Comments on: The Tyrannosaur Tooth Toolkit http://blogs.smithsonianmag.com/dinosaur/2011/03/the-tyrannosaur-tooth-toolkit/ Where Paleontology Meets Pop Culture Sat, 22 Dec 2012 16:48:38 +0000 hourly 1 http://wordpress.org/?v=3.4 By: The Boneyard comes to SOS | Sorting out Science http://blogs.smithsonianmag.com/dinosaur/2011/03/the-tyrannosaur-tooth-toolkit/comment-page-1/#comment-3940 The Boneyard comes to SOS | Sorting out Science Tue, 05 Apr 2011 12:54:17 +0000 http://blogs.smithsonianmag.com/dinosaur/?p=5173#comment-3940 [...] to know more about dinosaurian dentition? Dinosaur Tracking (a Smithsonian.com blog) brings us The Tyrannosaur Tooth Toolkit.Raptormaniacs contributes a pair of posts — A New Method for Inferring the Integument of [...] [...] to know more about dinosaurian dentition? Dinosaur Tracking (a Smithsonian.com blog) brings us The Tyrannosaur Tooth Toolkit.Raptormaniacs contributes a pair of posts — A New Method for Inferring the Integument of [...]

]]> By: amphiox http://blogs.smithsonianmag.com/dinosaur/2011/03/the-tyrannosaur-tooth-toolkit/comment-page-1/#comment-3878 amphiox Fri, 25 Mar 2011 18:49:21 +0000 http://blogs.smithsonianmag.com/dinosaur/?p=5173#comment-3878 I had always thought that the distinction between mammals and "reptiles" was not just that mammals had differentiated specialized teeth, but that mammals all had the same specific pattern of tooth differentiation, namely a set of front teeth for slicing, shearing or grabbing (incisors), a pair of sharp pointed teeth behind for piercing and pulling (canines), and two separate sets (premolars and molars) of side and back teeth that were variably specialized to specific tasks, dependent on lineage, such as chewing, grinding (ie primate and elephant molars), or slicing flesh (ie feline carnassials). (Or is this just for placental mammals?) I had always thought that the distinction between mammals and “reptiles” was not just that mammals had differentiated specialized teeth, but that mammals all had the same specific pattern of tooth differentiation, namely a set of front teeth for slicing, shearing or grabbing (incisors), a pair of sharp pointed teeth behind for piercing and pulling (canines), and two separate sets (premolars and molars) of side and back teeth that were variably specialized to specific tasks, dependent on lineage, such as chewing, grinding (ie primate and elephant molars), or slicing flesh (ie feline carnassials).

(Or is this just for placental mammals?)

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