. Science and Hebrew tradition : essays . ctual representation of some specimen whichis to be seen at Yale at this present time(Fig. 9). The succession of forms which he has broughttogether carries us from the top to the bottomof the Tertiaries. Firstly, there is the true we have the American Pliocene form of thehorse (Pliohippits); in the conformation of its limbsit presents some very slight deviations from theordinary horse, and the crowns of the grindingteeth are shorter. Then comes the Frotohi2J2^us,which represents the European Hip;parion, havingone large digit and two small on
. Science and Hebrew tradition : essays . ctual representation of some specimen whichis to be seen at Yale at this present time(Fig. 9). The succession of forms which he has broughttogether carries us from the top to the bottomof the Tertiaries. Firstly, there is the true we have the American Pliocene form of thehorse (Pliohippits); in the conformation of its limbsit presents some very slight deviations from theordinary horse, and the crowns of the grindingteeth are shorter. Then comes the Frotohi2J2^us,which represents the European Hip;parion, havingone large digit and two small ones on each foot,and the general characters of the fore-arm and legto which I have referred. But it is more valuablethan the European Hipparion for the reason thatit is devoid of some of the peculiarities of thatform—peculiarities which tend to show that the Fore Fuot Hiiiil Foot. Fore-arm. Leg. Upper Molar. Lower Molar. RECENT. EQTJUS. PLIOCENE. PLIOHIPPUS. PROTOHIPPUS(Hipparion). MIOCENE. MIOHIPPUS {Anehitherium). HESOHIPPtJS. FlQ. 9. in LECTURES ON EVOLUTIOIT 181 European Hipparion is rather a member of acollateral branch, than a form in the direct line ofsuccession. Next, in the backward order in time,is the Mioliiiopus, which corresponds pretty nearlywith the Anchitherium of Europe. It presentsthree complete toes—one large median and twosmaller lateral ones; and there is a rudiment ofthat digit, which answers to the little finger of thehuman hand. The European record of the pedigree of the horsestops here; in the American Tertiaries, on thecontrary, the series of ancestral equine forms iscontinued into the Eocene formations. An olderMiocene form, termed 3Iesohippus, has three toesin front, with a large splint-like rudiment repre-senting the little finger; and three toes radius and ulna, the tibia and the fibula, aredistinct, and the short crowned molar teeth areanchitherioid in pattern. But the most important discovery of all is theOrohippus, which c
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Keywords: ., bookcentury1800, bookdecad, booksubjectpaleontology, bookyear1895