Crazyhen Posted February 23, 2018 Share Posted February 23, 2018 Please take a look of the baby Keichousaurus below, its skull looks a bit different from others. Is it because the upper jaw and lower jaw were displaced and so the skull appears like that, or would this be a different species? I understand from local collectors there that this form is much rarer than the normal form. The normal forms are below: Link to comment Share on other sites More sharing options...
DevonianDigger Posted February 23, 2018 Share Posted February 23, 2018 The picture on top is adorable, lol! (Sorry I know nothing about such things, so I cannot be of any help, just the peanut gallery.) Jay A. Wollin Lead Fossil Educator - Penn Dixie Fossil Park and Nature Reserve Hamburg, New York, USA Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted February 23, 2018 Share Posted February 23, 2018 If it is a very young baby, perhaps the skull would be softer and deform more easily during the fossilization process ? Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
Crazyhen Posted February 23, 2018 Author Share Posted February 23, 2018 The local collectors called that rare form "梅花頭" or "clubs head", it does resemble the clubs (♣) Link to comment Share on other sites More sharing options...
Troodon Posted February 23, 2018 Share Posted February 23, 2018 Having a difficult time trying to see a normal skull reshaping itself into that club shape. The body shape also looks different than other K. hui is it possible it's just a different species. If that form occurs periodically with a consistent club shaped skull would that argue against it being due to fossilization. Link to comment Share on other sites More sharing options...
Crazyhen Posted February 23, 2018 Author Share Posted February 23, 2018 47 minutes ago, Troodon said: Having a difficult time trying to see a normal skull reshaping itself into that club shape. The body shape also looks different than other K. hui is it possible it's just a different species. If that form occurs periodically with a consistent club shaped skull would that argue against it being due to fossilization. Very true, Troodon, that might be possible. If the jaws are not displaced, the skull is of a quite different shape than K. hui. This is very interesting. The local also calls it ‘big headed dragon’. Link to comment Share on other sites More sharing options...
oldtimer Posted February 23, 2018 Share Posted February 23, 2018 Either way it is a marvelous specimen. Link to comment Share on other sites More sharing options...
RJB Posted February 23, 2018 Share Posted February 23, 2018 Would love to see it after prep! RB Link to comment Share on other sites More sharing options...
Pemphix Posted February 23, 2018 Share Posted February 23, 2018 First foto is from embryonal Keich, see LIN&RIEPPEL "Functional Morphology of Keichousaurus" pg. 21 fig. 15. Shape of body is usual like this with embryonic Keichs, size of head is too. Shape of skull is unusual, never saw that before. But easy to assume, that this is related to preservation, since this embryonic skull is very fragile and only a few pressure woul be enough to deform it. The more they are getting adult, the more ossification of the scull takes place and making it more stable. I think, there's plenty of literature by O.Rieppel et al. concerning ontogeny of Keichs. Link to comment Share on other sites More sharing options...
Crazyhen Posted February 24, 2018 Author Share Posted February 24, 2018 9 hours ago, RJB said: Would love to see it after prep! RB The local collector told me that baby keichs can only be prepped by acid washing and no one would do it as it’s very easy to dissolve the delicate bones of the baby. I suppose it could only be prepped using very professsional equipment. Link to comment Share on other sites More sharing options...
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