英和和英

名詞

fossettid (複数形 fossettids)

1. (paleontology, teeth) A small depression in the crown of a lower tooth.
   • 1979, Ralph Nichols, Additional Early Miocene Mammals from the Lemhi Valley of Idaho, page 4:

     An elongate fossettid separates the entoconid and hypoconid.

   • 2005, Samantha Sara Brittany Hopkins, Evolutionary History and Paleoecology of Aplodontoid Rodents, page 74:

     State 1 is coded for those taxa with a substantial difference in the depth of the basins between the central fossettid and all others, such that a mid- or late wear specimen will have the central fossettid still present and clearly-defined, while the others will all be worn away.

   • 2008, Eric J. Sargis, ‎Marian Dagosto, Mammalian Evolutionary Morphology, page 149:

     The p1 is smaller than the canine and is little more than a peg-like structure, ovoid in occlusal view with a tiny fossettid in the middle.

   • 2010, Richard H. Madden, ‎Alfredo A. Carlini, ‎Maria Guiomar Vucetich, The Paleontology of Gran Barranca, page 149:

     When compared with taxa from the Mustersan and Tinguirican, Patagonhippus canterensis n. gen. et n. sp. and P. Dukei n. gen. et n. sp. share the absence of a posterior fossettid, but have a more hypsodont dentition.