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| Keywords: The Quarterly journal of the Geological Society of London (12684455583).jpg 362 PROCEEDINGS OF THE GEOLOGICAL SOCIETY May 19 <br> Fig 10 Section near Tour nay <br> Loess <br> TGlauconite 5 <br> Lower Landenians <br> LGreymarl 4 <br> Chalk-marl <br> Tourtia <br> Carboniferous Limestone 1 <br> beds of a green sandy glauconite 5 10 feet thick in the upper part <br> of which layers of cherty stone from 6 to 8 inches thick abound with <br> casts of shells In this glauconite the same Ostrea lateralis and <br> Terehratula striatula occur which are met with in the grey marl <br> 4 so that it seemed to me impossible to draw a line between <br> the beds 4 and 5 or to consider 4' as cretaceous and <br> 5 tertiary The other fossils which I found in 5 con- <br> sisted of a Pholadomya P Koninckii Cucullcea Pinna Turri- <br> telluy Fusus Natica c chiefly casts and these in too unsatis- <br> factory a state to admit of being specifically distinguished A gigantic <br> Pleurotomaria sometimes retaining its shell is not uncommon in <br> these beds and is very unlike any fossil occurring in the Lower Ter- <br> tiaries of England or France It resembles rather the P gig ant ea <br> of the Lower Greensand One species and as yet one only of this <br> genus is known in the Calcaire grossier P concava of Deshayes <br> ' Coq Foss de Paris ' vol ii pi 32 fig 1 2 3 much smaller <br> in size though somewhat analogous in form According to Baron <br> Ryckholt who possesses the finest collection of shells from the glau- <br> conite of Tournay all the species which have been referred to ter- <br> tiary shells are distinct Not a few of them he considers identical <br> with fossils of the Faxoe Maestricht and other cretaceous formations <br> The difficulty of defining the specific characters in the genera Phola- <br> domya Scalaria My a and Pinna without having a full and perfect <br> series of the individuals for comparison is such that I cannnot pre- <br> tend without better specimens than I brought from Tournay and <br> Angres to offer a positive opinion on this point I believe neverthe- <br> less that Baron Ryckholt when he publishes a full account of his <br> valuable cqllection will succeed in proving the beds in question to be <br> older than any fossiliferous strata above the Chalk in England 35461416 109911 51125 Page 362 Text v 8 http //www biodiversitylibrary org/page/35461416 1852 Geological Society of London NameFound Deshayes NameFound Fusus NameConfirmed Fusus EOLID 2988518 NameBankID 4173880 NameFound Natica NameConfirmed Natica EOLID 58662 NameBankID 2684906 NameFound Ostrea lateralis NameConfirmed Ostrea lateratus Nilson NameFound Phola NameConfirmed Phola EOLID 3286720 NameBankID 4294296 NameFound Pholadomya NameConfirmed Pholadomya EOLID 4744545 NameBankID 4294325 NameFound Pinna NameConfirmed Pinna EOLID 57673 NameBankID 2692221 NameFound Pleurotomaria NameConfirmed Pleurotomaria EOLID 4793392 NameBankID 4302858 NameFound Pleurotomaria concava NameConfirmed Pleurotomaria concava Desh NameFound Scalaria NameConfirmed Scalaria EOLID 4856646 NameBankID 245500 NameFound Terehratula striatula NameConfirmed Terebratulina striatula Sowerby 1829 Biodiversity Heritage Library The Quarterly journal of the Geological Society of London v 8 1852 Geology Periodicals Smithsonian Libraries bhl page 35461416 dc identifier http //biodiversitylibrary org/page/35461416 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 N02/12684455583 2015-08-27 12 55 03 cc-by-2 0 PD-old-70-1923 The Quarterly journal of the Geological Society of London 1852 Photos uploaded from Flickr by FĂŚ using a script | ||||
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