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| Keywords: The Quarterly journal of the Geological Society of London (12736833294).jpg 698 <br> PROF OAVEN ON THE EANK AND AFFINITIES IN <br> lizard Amblyrhynchus agrees with the rest of the Iguanidce and <br> some other Saurians <br> The main distinction of the pterygoids in the great extinct Sea- <br> lizard fig 16 24 is their extensive median suture by which these <br> bones have their fixity more assured and contribute a greater share <br> to the roof of the mouth It is probable that observation of this <br> character may have led Prof Cope to reject thedetermination by <br> Cuvier of the pterygoid nature of these bones and to propound <br> their homology with the palatine bones of the Beptilia and espe- <br> cially with those in Ophidic/ fig 17 in which these bones 20 as <br> well as the pterygoids 24 support teeth <br> Python <br> The bony palate <br> The narrow fore end of the ophidian pterygoid fig 17 24 <br> articulates by a squamous suture with the palatine ib 20 ; a similar <br> suture attaches the low outer angle to the transversal or <br> ectopterygoid 25 and the opposite inner one to the pterapophysis <br> of the basisphenoid The elastic connecting tissue allows some <br> yielding motion at all these joints There is no trace of a colu- <br> mellar articular process on the upper part of the bone in any <br> Ophidian nor is there a trace of the columella The long hinder <br> extension of the tympanic process Z so characteristic of the ptery- <br> goid bone is as well developed in Ophidia as it is in Lacertilia ; <br> but it is more bent in Python than in Amblyrhynchus or in Mosa- <br> aaurus <br> The true palatine bone in Mosasaurus fig 16 20 is edentulous 35818875 110705 51125 Page 698 Text 33 http //www biodiversitylibrary org/page/35818875 1877 Geological Society of London NameFound Amblyrhynchus NameConfirmed Amblyrhynchus EOLID 35626 NameBankID 2536011 NameFound Lacertilia NameConfirmed Lacertilia EOLID 1704 NameBankID 655694 NameFound Mosasaurus NameConfirmed Mosasaurus EOLID 4518635 NameBankID 4248162 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 33 1877 Geology Periodicals Smithsonian Libraries bhl page 35818875 dc identifier http //biodiversitylibrary org/page/35818875 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-24 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12736833294 2015-08-26 20 00 20 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1877 Photos uploaded from Flickr by Fæ using a script Python genus | ||||
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