protocone


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pro·to·cone

(prō'tō-kōn),
The mesiolingual cusp of an upper molar tooth in a mammal.
[proto- + G. kōnos, cone]

pro·to·cone

(prō'tō-kōn)
1. The mesiolingual cusp of human upper molars.
2. Formerly thought to be the first upper molar cusp to develop evolutionarily.
See also: protoconid
[proto- + G. kōnos, cone]

pro·to·cone

(prō'tō-kōn)
Mesiolingual cusp of mammalian upper molar tooth.
[proto- + G. kōnos, cone]
References in periodicals archive ?
M3 occlusal surface: 0 = cuspate with a distinct paracone, protocone, and hypocone; 1 = lophate with 3 lophs; 2 = lophate with 2 lophs.
The skulls of both species also are similar in having long, narrow rostra, moderately inflated frontal regions, short zygomatic plates, a reduced interparietal, and elongated palatal foramina that reaches the level of the protocone of M1.
2 (some more-derived dichobunines plus lantianiine, some eurodexine dichobunids): Ms quadrate, incipiently selenodont; hypocone distinct; metaconule in latter two groups still connected to protocone by postprotocrista, interrupting transverse valley (TV) (OW).
Structures analyzed include the mesostyle, prefossette, postfossette, pli-caballin, protocone, protoconule and hypoconal groove.
differs in many respects from Sivalhippus theobaldi, in a small size, complicated enamel plications and rounded to ovate isolated protocone. The studied specimens have complicated enamel plications with rounded to ovate shape isolated protocone and reveal all the features of the species Hipparion sp.
The paracone and the metacone are well preserved while the protocone and the hypocone are missing.
splendens with more prominent median accessory cusps; lingual cusp of P4 not directly opposite the protocone, so that the loph on P4 is not as clear as in L.
The molar has four main inflated cusps, the paracone, the protocone, the metacone and the hypocone.
The posthypocrista is longer than the praehypocrista as in the protocone. The fossettes are narrow and crescent.
Height was measured on the metastylid of lower molar and protocone of the upper molar.
It is slightly developed on the anterior side of the protocone. The entostyle is weak, placing in the transverse valley between the protocone and the hypocone.
At the same time, Kretzoi created the genus Percrocuta for some other percrocutoid forms (hyaenids of relatively small size and with a reduced P4 protocone).