. A history of British fossil mammals, and birds . d smaller semi-cylindrical such a tooth, which was obtained from the Seafieldquarry, Isle of Wight, two views of the recently formedcrown are subjoined (fig. 115) : a is the outer side, shew-ing the form above described ; h is theinner side, shewing the longitudinaldepressions which penetrate the outerlobes or convexities. This tooth, whichis rather less than the corresponding oneof the PaleJEotherimn crassum, figured byCuvier, ( Ossemens Fossiles, 4to, 1822,tom. iii. pi. 1, §■,) must have belongedto a young animal. It had probablynot

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. A history of British fossil mammals, and birds . d smaller semi-cylindrical such a tooth, which was obtained from the Seafieldquarry, Isle of Wight, two views of the recently formedcrown are subjoined (fig. 115) : a is the outer side, shew-ing the form above described ; h is theinner side, shewing the longitudinaldepressions which penetrate the outerlobes or convexities. This tooth, whichis rather less than the corresponding oneof the PaleJEotherimn crassum, figured byCuvier, ( Ossemens Fossiles, 4to, 1822,tom. iii. pi. 1, §■,) must have belongedto a young animal. It had probablynot cut the gum; certainly not comeinto use, for the margins of the crescenticsummits of the three lobes are the grinding surface of the tooth(fig. 116), which is the fifth of themolar series of the lower jaw, and thefirst of the three true molars, the twocrescents are united by a continuoussize. PaicBotheriunicras- tract of dentine, the intermediate wall Slim ; Biiistead, Isle of r> 1 i • i i ^-jjj 01 enamel having been worn do^ Last lower molnr, Palseotheie. Eocenemarl, Isle of Wight. Fiq. 116.

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Keywords: ., bookaut, bookcentury1800, bookdecade1840, booksubjectpaleontology