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Showing results for tags 'centrosaurinae'.
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Differentiating Centrosaurine from Chasmosaurine tooth crowns?
Opabinia Blues posted a topic in General Fossil Discussion
I recall reading on the boards somewhere before that hadrosaur tooth crowns can sometimes be assigned to either the Lambeosaurinae or the Saurolophinae if enough of the crown is present. I was wondering if the same can be said for ceratopsid teeth? Can ceratopsid teeth from localities in which members of both subfamilies are known ever be identified down to subfamily? This question was prompted by both general curiosity and by the fact that I occasionally see isolated ceratopsid teeth sold down to the generic level (ie, one seller who has listings for Avaceratops, Judiceratops, and Medusaceratops spitters), and although I am almost certain you cannot make a generic-level identification of isolated teeth it does make me wonder whether or not these "identifications" could be based on subfamily designation? And if so, what's the diagnostic character/s for each?-
- centrosaurinae
- ceratopsidae
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There is a new centrosaurine ceratopsid from New Mexico described here: https://link.springer.com/article/10.1007/s12542-021-00555-w If anyone is unaware, the holotype of Menefeeceratops sealeyi was initially described by Williamson (1997), who refrained from from giving it a name because the holotype was incompletely prepared at the time of its initial description. With the description of new centrosaurines from southern Laramidia over the past decade, the exact relationships of Menefeeceratops to other centrosaurines have now been possible to decipher. Williamson, TE (1997). A new Late Cretaceous (early Campanian) vertebrate fauna from the Allison Member, Menefee Formation, San Juan Basin, New Mexico. In Lucas, SG; Estep, JW; Williamson, TE; Morgan, GS (eds.). New Mexico's Fossil Record 1. Albuquerque: New Mexico Museum of Natural History and Science Bulletin 11: 51–59.
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- centrosaurinae
- menefeeceratops
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Hey guys! So about four years ago, someone sold me a really cheap batch of unprepped fossils they dug up in the US; which included a large piece of rib bone (or so the seller thought). I started prepping the 'rib', and thought it looked a little strange. It had a tendon running along the bottom; which seemed weird as it was supposed to be a rib. However, I was still pretty new to fossil prep/ID, and I trusted the seller's ID better than my own. I wound up setting it on the shelf for...a couple years. Fast forward to about a week ago. I was cleaning out my fossil storage 'area' and I came upon this bone again. I again thought it didn't look much like a rib, and decided to google different kinds of dinosaur spikes. After scrolling through all kinds of ankylosaurs, stegosaurs, triceratops, etc. I came upon Styracosaurus. It bore a passing resemblance to the parietal spike on its frill, and I figured I better start prepping it. After prepping it, I was blown away. Not only does the bone have a tendon attached, but there are all kinds of subtle curvatures you couldn't see with the layer of dirt that had covered it. The texture is very unusual too, and the bone is actually really thin! The tip comes to a point and gradually twists. It's hard to describe, so I've included a bunch of pictures. Anyway, after researching more about the sub-family Centrosaurinae, I came across Rubeosaurus and Einiosaurus; which both have spikes that are EXTREMELY similar to the bone I have. If this thing is a rib I'll eat my foot. Please let me know what you think! Any thoughts are much appreciated. -Lauren
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- centrosaurinae
- ceratopsian
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