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[dinosaur] Fossil ownership issues + Cal Orck'o dinosaur tracksite + temnospondyl teeth + more




Ben Creisler


Some recent items:


Who Owns The Dinosaurs? It All Depends On Where You Find Them
Interview with Thomas Carr


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AMNH 5027 (famous T. rex mount) (in Czech)


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Studying the dinosaurs (ornithopods and ankylosaurs) in depth from the Early Cretaceous La Cantalera-1 site, in Teruel, Spain, including bone histology and fossilization process;Â most specimens were juveniles (in Spanish)



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Dinosaur Expert Phil Currie Honored In Morden, Manitoba, Says Many Mysteries Remain
Dr. Elizabeth "Betsy" Nicholls award for Excellence in Palaeontology



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Powder Hill Dinosaur Park in Middlefield, Connecticut


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Team with National Geographic (including Mexican paleontologist Josà RubÃn GuzmÃn) are working at the Cal Orck'o dinosaur tracksite in Bolivia to help document the site, including for a television broadcast and a print article for National Geographic (in Spanish)





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Dental origami: the elegant shapes of "folded" plicidentine dentine in temnospondyls and more


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non-dino:



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The Mystery Behind the Biggest Bears of All Time
PBS Eons



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On the fringe...


C. G. M. Paxton and D. Naish (2019)Â
Did nineteenth century marine vertebrate fossil discoveries influence sea serpent reports?
Earth Sciences History 38(1): 16-27


Here we test the hypothesis, first suggested by L. Sprague De Camp in 1968, that "After Mesozoic reptiles became well-known, reports of sea serpents, which until then had tended towards the serpentine, began to describe the monster as more and more resembling a Mesozoic marine reptile like a plesiosaur or a mosasaur." This statement generates a number of testable specific hypotheses, namely: 1) there was a decline in reports where the body was described as serpent or eel-like; 2) there was an increase in reports with necks (a feature of plesiosaurs) or reports that mentioned plesiosaurs; and 3) there was an increase in mosasaur-like reports. Over the last 200 years, there is indeed evidence of a decline in serpentiform sea serpent reports and an increase in the proportion of reports with necks but there is no evidence for an increase in the proportion of mosasaur-like reports. However, witnesses only began to unequivocally compare sea serpents to prehistoric reptiles in the late nineteenth century, some fifty years after the suggestion was first made by naturalists.


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