Similar to Thomas' point re hadrosaurs, the type specimen of the sauropod Euhelopus was found with the fish Sinamia was inside its ribcage, but this is not, and has never been suggested to be, evidence of piscivory in sauropods.
On 28 Aug 2016, at 23:54, "Thomas R. Holtz, Jr." <firstname.lastname@example.org> wrote:This is an interesting hypothesis, but let us not forget the possibility that the fish in the belly could be post-mortem associations. (After all, finding a gar in the belly of a hadrosaur is not evidence of piscivory in duckbills!)
On 2016-08-28 09:46, Brian Lauret wrote:I think it is worth mentioning that according to Victoria Arbour, whoresearches ankylosaurs, Little L's plastron is actually misidentifiedbelly scales (see https://urldefense.proofpoint.
com/v2/url?u=https-3A__). I have no opinion on the matter. pseudoplocephalus.com_2014_04_ 02_scaling-2Dup_&d=DQICAg&c= clK7kQUTWtAVEOVIgvi0NU5BOUHhpN 0H8p7CSfnc_gI&r=Ry_ mO4IFaUmGof_ Yl9MyZgecRCKHn5g4z1CYJgFW9SI& m=ls3_qEyVOCCJjjGHPq- 2jZenRkmxvhyvYrseiF2u8eI&s= k3Pduly9AngRzJfsGQ8IL68PPrWDNL QZxYaP3R2QK0Y&e=
Arbor provides a close up photo of the supposed armor on that link. Note that it is NOT like the plastron of a turtle or the belly armor of some placodonts. I strongly suspect that she is correct. (And this probably IS the case of the remarkable preservation you refer to in the next paragraph).Lastly and most out there, an aquatic _Liaoningosaurus_ might also bean alternative explanation for its lack of preserved integument ifthis was actually a derived, naked-bodied ornithischian that had lostall integument because of adapting said lifestyle. Does the critterhail from rocks that preserve soft tissue impressions, most notablyfeathers, or is this a moot suggestion of mine anyway?
It is from the Yixian, but keep in mind that preservation in any unit--even across the same bedding plane on a meter-scale--can be radically different. (These sites are remarkable because they CAN preserve fine details, not because they MUST preserve them. :-) ).
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