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Prenatal dental development in the black howler monkey ( Alouatta caraya )
Author(s) -
Tarrant Lewis H.,
Swindler Daris R.
Publication year - 1973
Publication title -
american journal of physical anthropology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.146
H-Index - 119
eISSN - 1096-8644
pISSN - 0002-9483
DOI - 10.1002/ajpa.1330380219
Subject(s) - molar , deciduous , crown (dentistry) , calcification , biology , deciduous teeth , dentistry , medicine , pathology , botany
Prenatal dental development was investigated in 19 black howler monkey fetuses that ranged in crown‐rump length from 84 mm to 170.5 mm. During this period of fetal development, all of the deciduous teeth and the first permanent molars were found to pass through various stages of crown and root formation. The deciduous incisors, canines, and first molars each calcified from a single calcification center. The second deciduous molars each calcified from two separate calcification centers. And, the third deciduous and first permanent molars each calcified from four separate calcification centers. The morphogenetic events involved in the establishment of the molar crown patterns were found to differ markedly from those of their counterparts among catarrhine primates. In all cases, however, the calcification sequence was found to be directly related to the morphology of the developing crown.