A guide to the fossil invertebrate animals in the Department of geology and palaeontology in the British museum (Natural history) . Beading Beds,and the Thanet Sands. Except for the Oldhaven andWoolwich Beds, which contain both estuarine and marinefossils, all these formations are purely marine. Many ofthe specimens exhibited have been figured by G. A. Mantell,James Sowerby, F. E. Edwards, and others. A largespecimen of Cardita 2)lcinicosta is marked so as to explainthe terms applied to the various parts of a lamellibranchshell. Here also is the curious burrowing^ lamellibranch
A guide to the fossil invertebrate animals in the Department of geology and palaeontology in the British museum (Natural history) . Beading Beds,and the Thanet Sands. Except for the Oldhaven andWoolwich Beds, which contain both estuarine and marinefossils, all these formations are purely marine. Many ofthe specimens exhibited have been figured by G. A. Mantell,James Sowerby, F. E. Edwards, and others. A largespecimen of Cardita 2)lcinicosta is marked so as to explainthe terms applied to the various parts of a lamellibranchshell. Here also is the curious burrowing^ lamellibranch Table-cases2 & 3. Centre-cases A2A3. Table-case3. BetweenWall «&;3. Table-ease4. Table-case5. Table-case4. 130 GUIDE TO THE FOSSIL INVERTEBEATE ANIMALS. Gallery Stirimlina \Clavagella\ coronata, in which a shelly tube isVIII. formed round the long siphons while the shell-valvesremain quite small and attached to the side of the addition to the gastropods here figured (Fig. 69), onemay note the beautiful Voluta luctatrix, the large Hijj-IJochrenes [Rostellaria] ampla, and Xenophora agglutinans,. Fig. 69.—Shells of Eocene marine Gastropods and Lamellibranchs. a, Cyprina Morrisi, Thanet Sands of Herne Bay, Kent; the specimenfigured by J. de C. Sowerby; the hole is due to a boring animal. b, Pholadomyavirgulosa, London Clay of Bognor, Sussex; a small speci-men, c, inside, and d, outside of left valve of Crassatellites sulcatus,Barton Beds of Hampshire, e, Cypraea Bowerbanki, Lutetian ofBracklesham, Sussex. /, Glavalithes longeevits, Barton Beds ofHampshire, g, the hinge, and h, the outside of right valve of Carditaplanicosta, a small specimen, Lutetian of Bracklesham. b, c, d, g, h,are natural size; a, e, § natural size; /, J natural size. (Table-cases 4 & 5.) one of the carrier-shells that become covered with bits ofstone, shell, and other foreign substances. Among London MOLLUSCA (except CEPHALOPODA). 131 Clay fossils are the long tubes formed by the b
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Keywords: ., bookauthorbr, bookcentury1900, bookdecade1900, booksubjectfossils
