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Showing results for tags 'pliosaurs'.
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This started bothering me from lack of fossils for sale(and tooth prices when they are), and although this is far from anything scientific or reliable, I feel like I hear about plesiosaur fossil finds significantly more than pliosaurs finds(im not really sure how to begin searching for that kind of compiled info). Is there a reason pliosaurs seem to be so rare? As far as fossils for sale, the only thing I can think of, other than pliosaurs being just plain rare(super rare when compared to the number of plesiosaurs), is that for some reason everyone just mistakes/assumes pliosaur fossils are actually from plesiosaurs.
Its Toothy Tuesday Time Tooth of the pliosaurid Liopleurodon from the Middle Jurassic (Callovian) Oxford Clay of the Peterborough area in England, courtesy of Sven Sachs WOW now thats big Skull of the giant ichthyosaur Temnodontosaurus. Lower Jurassic of Bielefeld. Collection of the Natural History Museum Bielefeld, Germany. Also by S. Sachs More from Sven ..Skull of the amiid fish Calamopleurus from the Lower Cretaceous of Brazil. On display at the Geomatikum, University of Hamburg (Germany) Give it a few seconds for 3D image to activate From the Witmer Lab the a 3D image of the Dentary of the Nanotyrannus "Jane" https://t.co/uuM7tmCRHZ Also from the Witmer Lab dentary of Majungasaurus from Madagascar https://t.co/ElIGOIGUdI Tyrannosaur tooth climbing out of its root bound tomb, courtesy of Eric Lund Tyrannosaurus premaxillary (above) and dentary (below) tooth from the same individual. Courtesy of David Honex Walruses once lived along the coast of New Jersey! Here is the palate (roof of the mouth) of a large walrus, Odobenus rosmarus, that was dredged up off of Long Branch, NJ. You can see the sockets where the tusks once were and 3 small teeth on each side. Courtesy of NJ State Museum Tooth of a large (~4 m) dromaeosaurid from North Carolina, courtesy of Chase Brownstein. Setting up one of Hesperornis dentaries for molding. Courtesy of Carrie Herbel Also from Carrie, a skull of the Cretaceous toothed bird Hesperornis. In the lab scanning a tyrannosaurid maxilla from the Texas Mem Museum Juvenile T rex teeth from Baby Bob, hmmm definitely not Nanotyrannus Fossils are great, but it’s kind of a bummer there aren’t walking whales like Pakicetus, courtesy of Brian Switek Daspletosaurus dentary in the collections NHM London from the Late Cretaceous of Alberta, collected by WE Cutler, courtesy of NHMdinoLab Also from the dinolab the Middle Jurassic theropod Duriavenator One more For all you T. rex groupies out there here’s some of the dentary teeth from the first skeleton of this species ever found now at NHM London , collected by Barnum Brown in 1900, from Wyoming, USA A Daspletosaurus from tge Two Medicine Fm of Montana, courtesy of Jack Horner
I'm doing a survey of all valid plesiosaur genera described to date and so far, about 100 valid plesiosaur genera have been described so far. Has there been any published study regarding the estimated generic diversity of plesiosaurs?