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Showing results for tags 'pliosaur tooth'.
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Brachauchenius lucasi finds are more based in Kansas, but examples in Eagle Ford Texas have been found, most notably Willison's 1907 second B. lucasi skull which has been found in the same area. There is a possibility that this tooth could actually be Polyptychodon hudsoni which have been also found in Eagle Ford, but based on the morphology of the tooth (especially the root part near the crown), I think it is more likely B. lucasi.
So I've gotten myself into an extremely rare deal- a mosasaur and pliosaur tooth both in the US for a small fee of 130 bucks or so (95 british pound) The goodies arrived today, and I might as well show em off. First off, we have a mosasaur tooth from the Ozan Formation of Fannin County. Knowing that the NSR flows inside Fannin County and is also part of the Ozan Formation, This tooth is probably also from the NSR itself. Although the seller didn't have time to do a full ID on the tooth and simply labeled it as unidentified, by extensive comparing with other mosasaur teeth from the area, I can promptly assume that this is cf. Tylosaurus proriger, meaning that after 11+ years of my life, I finally have a T. proriger tooth . Unless someone decides to be a donkey and counterID it. Next, we got a tooth that has been sought out for by countless collectors- a north american pliosaur tooth. As with other Texan pliosaur teeth, this one was from the Britton Formation near Dallas. Again, the seller labeled it as an unidentified pliosaur. This time though, IDing is difficult. Based on my knowledge, the two possible candidates are Brachauchenius lucasi and Polyptychodon hudsoni, which both have been found in this area. But as its hard to tell the difference between the two in teeth, I can't make a solid pinpoint. Maybe I'll just be biased and label it as cf. Brachauchenius lucasi because brachs are more iconic to me and due to the unstableness of the polyptychodon taxon. Although not as large as other's tylosaurus teeth, this one still kicks over 4 cm which is still pretty big to me. The pliosaur tooth is just over 2 cm, making it quite small but worth due to its rarity.