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| Keywords: The Quarterly journal of the Geological Society of London (12684715434).jpg 250 PROCEEDINGS OF THE GEOLOGICAL SOCIETY Apr 21 <br> shell of the Terrain Landenien The P margaritacea is also mentioned by <br> Nyst as a fossil of the Terrain Landenien and by D'Archiac and Melleville as <br> from the Sables Inferieurs <br> m Resembles the Saxicava Grignonensis of Deshayes <br> We have therefore in the Thanet Sands 39 species of Testacea of <br> which 24 are determined Of these only 6 are common to the whole of <br> the Eocene series and 2 more range as high as the London Clay <br> Of the remaining 1 6 peculiar to the Lower Tertiary strata 3 extend <br> into the Basement-bed of the London Clay and 2 to the level <br> of the Woolwich group whilst as many as 1 1 or nearly one half of <br> the whole are peculiar to the Thanet Sands The distinction is not to <br> be attributed to different conditions of the waters for although at <br> Woolwich this has necessarily operated by excluding the more marine <br> species and introducing in their place others of fluviatile and sestuarine <br> origin still in and adjoining the Isle of Thanet both the middle and <br> upper divisions of the Lower London Tertiaries are marine and con- <br> sequently the conditions in this respect of the three groups are equal <br> and still the difference of fauna holds good <br> Annexed are the detailed sections of the two localities where the Thanet Sands <br> are most fossiUferous the Reculvers excepted Their relation to the other parts <br> of the Lower London Tertiaries is shown in sections 1 2 3 PI XV <br> Fig 4 ” Section of part of the Cliff at Pegwell Bay near <br> Ramsgate s in Section 1 PL XV <br> cdci <br> Feet <br> 1 Drift of light-coloured brick-earth with a thin irregular seam of gravel <br> angular and small round flints mixed with broken fragments of the <br> shells of the underlying beds at its base 4-6 <br> 2 Light yellow slightly clayey sand with shells in layers and patches ; ' a <br> tabular masses of fissile micaceous calcareous sandstone with few <br> shells ” a very small Corhula often occurs in great abundance ; b <br> small calcareous concretions in which the Pholadomya Koninckii is not <br> uncommon ; c large concretionary blocks often very argillaceous ; <br> their lower surface frequently presents masses of shells especially the <br> Cyprina Morrisii Traces of Plants occur both in b and c 16 <br> 3 Grey clayey sands rather dark when wet but lighter-coloured when diy <br> the upper part especially looking at a distance almost like chalk ” the <br> lower part is more argillaceous and darker ; d ' a seam of grey clay <br> with shells in patches ; ' e a thin layer of impure greensand full of <br> very friable shells Several shells especially the Pholadomya cuneata a <br> Nucula and the small Cytherea together with frequent traces of plants <br> are dispersed in some abundance and in a good state of preservation <br> throughout this bed 3 15 35461298 109911 51125 Page 250 Text v 8 http //www biodiversitylibrary org/page/35461298 1852 Geological Society of London NameFound Cyprina NameConfirmed Cyprina NameBankID 4132765 NameFound Cytherea NameConfirmed Cytherea EOLID 56636 NameBankID 976114 NameFound Deshayes NameFound Nucula NameConfirmed Nucula EOLID 10719654 NameBankID 2691879 NameFound P margaritacea NameFound Pholadomya NameConfirmed Pholadomya EOLID 4744545 NameBankID 4294325 NameFound Pholadomya cuneata NameConfirmed Pholadomya cuneata Sby NameFound Saxicava NameConfirmed Saxicava NameBankID 4336538 NameFound Testacea NameConfirmed Testacea EOLID 10569252 NameBankID 1458464 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 8 1852 Geology Periodicals Smithsonian Libraries bhl page 35461298 dc identifier http //biodiversitylibrary org/page/35461298 smithsonian libraries Information field Flickr posted date ISOdate 2014-02-21 Check categories 2015 August 26 CC-BY-2 0 BioDivLibrary https //flickr com/photos/61021753 N02/12684715434 2015-08-27 12 54 33 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1852 Photos uploaded from Flickr by Fæ using a script | ||||
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