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单词 paracone
释义 paracone|ˈpærəkəʊn|
[f. para-1 + cone n.1]
An external cusp on the front, outer corner of a mammalian upper molar tooth.
1888H. F. Osborn in Amer. Naturalist XXII. 1072 (table) Proposed terms... Paracone.1896Proc. Zool. Soc. 563 The first two upper molars [of the hedgehog] are..provided with two well-developed external cones, the paracone and metacone.1922W. K. Gregory Origin & Evolution Human Dentition i. 74 It seems very likely that the high apex of the upper-molar crowns [in the marsupial mole] is really the paracone.1934W. E. Le Gros Clark Early Forerunners of Man iv. 71 The premolars of a generalized mammal would be of simple form with a single pointed cusp which in the upper teeth is called the paracone and in the lower the protoconid.1971W. A. Clemens in A. A. Dahlberg Dental Morphol. & Evolution x. 187 The paracone and metacone of Cretaceous marsupials were maintained at approximately equal height.
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