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Showing results for tags 'angulomastacator'.
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Kritosaurus Real or not from Aguja Fm Texas
TyBoy posted a topic in Is It Real? How to Recognize Fossil Fabrications
I'm not very familar with Kritosaurus but all of a sudden lots of offerings appear on websites and auctions, goodies from Tucson ? I was interested in a tooth so I started fo do some research to validate their claims. Again trust no ID you see from diggers, sellers and collectors, how many times has that been said yet collectors seem to ignore it.. I also do know that other than the skull elements hardosaur material is very hard to ID to a specific genus and even more so to a speices What is being offered are Kritosaurus bones and teeth like the ones in the photos. Most were identified as Kritosaurus but some were called Kritosaurus navajovius. One identified them as either Kritosaurus or Angulomastacator. So I decided to hit the technical papers to clear some of the fog away and deal in facts at least to my limited reach. Fact: - Kritosaurus navajovius is only described from New Mexico and not Texas - Angulomastacator daviesi appears to be the only decribed Hadrosauridae in the Aguja. Its a Lambeosaurus - Material similar to Kritosaurus has been found in the Aguja but yet to be assigned to any particular hadrosaur (cf Kritosaurus) - Similar age deposits in Belly Group of Canada and Judith River have shown a diverse population of hadrosaurs in the Campanian age. Conclusion: I find it difficult for anyone to assign a genus or species name to any tooth or bones being offered unless it was found in conjuction with diagnostic skull material. Given the diverse hadrosaur population in other campanian deposits its hard to believe that new discoveries will not uncover new identifiable hadrosaur material in the Aguja at least more than 2 species. Sorry but the most accurate identification I can recommend is Hadrosaurid indet. Why Kritosaurus and not Angulomastacator at least its valid. Collectors and sellers need names to collect and sell its just the way the fossil world spins. A genus/species name is a lot sexier than a family name- 13 replies
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