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| Keywords: The Quarterly journal of the Geological Society of London (12736313415).jpg 688 <br> PROF OWEN ON THE RANK AND AFFINITIES IN <br> by Cuvier p 319 are sans explication osteologique ” that is <br> have no symbols of reference to the constituent bones <br> § 3 Upper Surface of the Cranium ” An ordinal characteristic <br> of Reptilia is afforded by the upper surface of the cranial and <br> cranio-zygomatic part of the skull <br> Fig 5 <br> Fig 6 <br> Mosasaurus <br> Occipital region and upper surface of cranium <br> Cuvier gives a view of this surface in two genera of Crocodilia f ; <br> but of the Lacertilia he limits his figures to oblique side views ; and <br> corresponding views of the Ophidia are omitted I therefore ap- <br> pend an upper view of the cranial characters in question in a Mosa- <br> sauroid fig 6 a Lacertian fig 7 and an Ophidian fig 8 in illus- <br> tration of the following remarks on this part of the skull <br> It is hardly necessary to do more than allude to the articulation <br> of the postfrontal with the mastoid in Crocodilia and the strong <br> arch which these broad horizontally flattened bones send over the <br> temporal fossa to which in some species they form a complete roof <br> The parietal also is imperforate If Cuvier had possessed the cor- <br> responding parts of the skull of a Mosasaur he would doubtless <br> have added convincing grounds against Faujas's view of the croco- <br> dilian affinities of that genus and in support of his own lacertian <br> conclusion <br> In the type Lacertilia Monitor Iguana Amblyrhynchus c <br> the temporal fossae t are widely open Each is bounded mesially by <br> the parietal fig 7 7 laterally by the postfrontal 12 and squa- <br> mosal 27 posteriorly by the mastoid 8 The parietal bifurcates <br> posteriorly and develops a ridge from the hind part of the oblite- <br> rated sagittal suture which ridge bifurcates anteriorly arching for- <br> wards and outwards to the postfrontal 12 ; the flat fore part of the <br> parietal 7 anterior to the latter bifurcation is perforated by the <br> foramen parietale ” in the Monitors and some other Lacertians <br> t Tom cit pi iii figs 1 and 6 35818865 110705 51125 Page 688 Text 33 http //www biodiversitylibrary org/page/35818865 1877 Geological Society of London NameFound Amblyrhynchus NameConfirmed Amblyrhynchus EOLID 35626 NameBankID 2536011 NameFound Crocodilia NameConfirmed Crocodilia EOLID 1739 NameBankID 582627 NameFound Iguana NameConfirmed Iguana EOLID 30431 NameBankID 2540598 NameFound Lacertilia NameConfirmed Lacertilia EOLID 1704 NameBankID 655694 NameFound Mosasaurus NameConfirmed Mosasaurus EOLID 4518635 NameBankID 4248162 NameFound Reptilia NameConfirmed Reptilia EOLID 1703 NameBankID 2549792 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 33 1877 Geology Periodicals Smithsonian Libraries bhl page 35818865 dc identifier http //biodiversitylibrary org/page/35818865 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-24 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12736313415 2015-08-26 19 51 38 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 | ||||
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