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| Keywords: The Quarterly journal of the Geological Society of London (12736320215).jpg THE KEPTILIAN CLASS OF THE MOSASAURID <br> 689 <br> near the coronal suture ; but in Amblyrhynchus and other Igua- <br> nians this foramen is in that suture <br> Tig 7 <br> Fig 8 <br> Monitor niloticus <br> Upper surface of cranium <br> Python <br> In the Python fig 8 and all other Ophidia the temporal fossae <br> t y have no outer boundary there being no zygomatic arch the <br> diverging appendages of the maxillary viz the malar and squa- <br> mosal bones are suppressed The parietal is feebly notched behind <br> not bifurcate The mastoid 8 overlaps the alisphenoido-parietal <br> suture by a squamous articulation projects far behind the occipital <br> surface of the skull and there supports the tympanic column by an <br> oblique terminal flat articular facet s' and fig 4 s' The parietal <br> 7 as in the Crocodilia is imperforate <br> In Mosasaurus Hoffrnanni fig 6 there is a large foramen parie- <br> late 7 which as in the Monitor is wholly in the parietal 7 The <br> parietal bifurcates posteriorly ; its prongs 7' extend backward and <br> outward and articulate with the mastoid 8 ; and this bone curves out- <br> ward and downward to join the squamosal 27 and with it to form <br> the articular surface for the tympanic Anteriorly the squamosal <br> unites with the postfrontal 12 The long and wide temporal <br> fossae are thus bounded externally as in Lacertians by a long and <br> narrow zygomatic bridge in the composition and proportions of <br> which the Mosasaur most resembles the Monitors and Iguanas 35818866 110705 51125 Page 689 Text 33 http //www biodiversitylibrary org/page/35818866 1877 Geological Society of London NameFound Amblyrhynchus NameConfirmed Amblyrhynchus EOLID 35626 NameBankID 2536011 NameFound Crocodilia NameConfirmed Crocodilia EOLID 1739 NameBankID 582627 NameFound Igua NameConfirmed Igua NameBankID 4554062 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 35818866 dc identifier http //biodiversitylibrary org/page/35818866 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-24 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12736320215 2015-08-26 20 02 58 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 Varanus niloticus Python genus | ||||
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