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| Keywords: The Quarterly journal of the Geological Society of London (12893857944).jpg Vol 53- <br> OP THE SKULL OP A PLIOSATJR <br> 179' <br> the latter element runs forward in the form of an elongated spear- <br> head of which the postero-lateral borders form the inner margin of the <br> posterior palatine vacuities while the antero -lateral borders form a <br> sutural union with the pterygoids see fig 1 On the upper surface <br> Fig 1 ” Posterior portion of palate showing the relations of the <br> parasphenoid and transverse bones <br> 7n r ”£r <br> ju jugal <br> pal ” palatine <br> pas parasphenoid <br> pt pterygoid <br> sq squamosal <br> trs transverse bone <br> About I nat size <br> of the posterior portion of the parasphenoid is a mass of osseous <br> tissue of somewhat irregular form This is probably the remains of <br> the anterior portion of the true basis cranii derived from the trabe- <br> cule and either forms an anterior portion of the basisphenoid <br> or an imperfectly ossified presphenoid The length of the exposed <br> portion of the parasphenoid is roughly 19 cm its width between <br> the post-palatine vacuities 1'8 cm and its greatest width between <br> the pterygoids 2-2 cm <br> The pterygoids jot in their general form and relations are <br> closely similar to those of PeJoneustes but there are one or two <br> well-marked differences The anterior rami which are very stout <br> and massive widen gradually from before backward and unite <br> externally with the palatines in a straight suture convex externally 36028950 111130 51125 Page 179 Text 53 http //www biodiversitylibrary org/page/36028950 1897 Geological Society of London Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 53 1897 Geology Periodicals Smithsonian Libraries bhl page 36028950 dc identifier http //biodiversitylibrary org/page/36028950 smithsonian libraries Information field Flickr posted date ISOdate 2014-03-03 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12893857944 2015-08-26 17 53 05 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1897 Photos uploaded from Flickr by Fæ using a script | ||||
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