单词 | paracone |
释义 | paraconen. Zoology. A cusp on the anterior buccal corner of a mammalian upper molar tooth. ΘΚΠ the world > animals > mammals > [noun] > parts of > (parts of) teeth heel1833 metacone1888 metaconid1888 metaconule1888 paracone1888 paraconid1888 protocone1888 protoconid1888 protoconule1888 mesostyle1892 talonid1897 1888 H. F. Osborn in Jrnl. Acad. Nat. Sci. Philadelphia 9 242 The primitive cone may be called the protocone; upon the anterior and posterior slopes of which appear, respectively, the paracone and metacone. 1934 W. 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. 1971 W. A. Clemens in A. A. Dahlberg Dental Morphol. & Evol. x. 187 The paracone and metacone of Cretaceous marsupials were maintained at approximately equal height. 1990 Jrnl. Zool. 222 588 There are wear facets on the lingual surfaces of the paracone and the metastylar blade. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < |
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