MAKE A MEME View Large Image The Quarterly journal of the Geological Society of London (14053245336).jpg THE UPPER SILTTEIAN OF NORTH AMERICA <br> 51 <br> Prof Huxley in tlie Quarterly Journal 1858 Prof Lankester <br> has added little upon this subject <br> Prof Huxley ...
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Keywords: The Quarterly journal of the Geological Society of London (14053245336).jpg THE UPPER SILTTEIAN OF NORTH AMERICA <br> 51 <br> Prof Huxley in tlie Quarterly Journal 1858 Prof Lankester <br> has added little upon this subject <br> Prof Huxley describes the shield of Pterasjns Scapliaspis Lloydn <br> as consisting of four distinct layers which he describes thus I c <br> p 275 ” <br> The total thickness of the section is about q of an inch and <br> of this amount about y - of an inch is occuiDied by the inner layer <br> Pig I ” Vertical Section of the Shield o/Pteraspis <br> Magnified 100 diameters <br> Copied from Prof Huxley's figure Q J G- S vol xiv pi xv fig 1 <br> a Enamel -ridges forming the outer layer b Eeticular layer <br> c d Middle and inner substances <br> e Cavity filled with matrix one of the supposed ossicles <br> / Vascular canal g Matrix <br> Prof Huxley's first figure is referred to in his paper as of Pteraspis Sea- <br> phaspis Lloydii but Prof Lankester in reproducing it writes of it probably by <br> o-versight as Fteraspis rostratus <br> e2 37046889 114009 51125 Page 51 Text 41 http //www biodiversitylibrary org/page/37046889 1885 Geological Society of London NameFound Fteraspis rostratus NameConfirmed Pteraspis rostrata NameFound Pteraspis NameConfirmed Pteraspis EOLID 4655774 NameBankID 4322058 NameFound Scapliaspis Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 41 1885 Geology Periodicals Smithsonian Libraries bhl page 37046889 dc identifier http //biodiversitylibrary org/page/37046889 smithsonian libraries Information field Flickr posted date ISOdate 2014-04-30 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/14053245336 2015-08-26 04 52 58 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1885 Photos uploaded from Flickr by Fæ using a script
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