| 释义 |
protoconule Zool.|-ˈkəʊnjʊl|
[f. protocone + -ule.]
An intermediate cusp between the protocone and the paracone of a mammalian upper molar tooth.
1888[see protocone]. 1905[see metaconule]. 1933A. S. Romer Vertebr. Paleont. xii. 248 Between protocone and paracone there is often a smaller cusp, the protoconule. 1968R. Zangerl tr. Peyer's Compar. Odontogr. 187 Intermediate cusps occurred along the trigon, a protoconule between protocone and paracone and a metaconule between protocone and metacone. |