Accommodation of Dental Variations During Jaw Growth in Ungulate Mammals
Helder Gomes Rodrigues, Jules Chabot, Thomas Cucchi, Guillaume Billet
TL;DR
This study explores how jaw bones and teeth grow together in 23 ungulate species, revealing patterns of integration and variation during development.
Contribution
The study provides new insights into the co-variation of teeth and palate growth in ungulates using 3D geometric morphometrics.
Findings
A common ontogenetic pattern shows elongated dental rows in juveniles and elongated palates in adults across species.
Ruminants exhibit higher co-variation between dental rows and palates compared to other ungulates.
Ungulates with late eruption of molars may have less constrained teeth-palate complexes.
Abstract
The growth of teeth and jaw bones is intimately linked in vertebrates, especially in mammals due to their specialized dentition and limited body growth. However, the relative patterns of growth and level of integration (i.e., co‐variation) of these structures are insufficiently known, which hinders our ability to understand how the jaw bones accommodate the diverse dental shapes and eruption patterns observed in mammals. Here, we studied the cranial ontogenetic series of 23 ungulate species among artiodactyls, perissodactyls, and hyracoids having different dental shapes and eruption patterns. We evaluated the variation of the teeth‐palate complex, as well as the co‐variation of teeth and palate during growth using 3D geometric morphometrics. We found a major ontogenetic component common to all the species studied, corresponding to an elongated dental row relative to the palate in…
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Taxonomy
Topicsdental development and anomalies · Bone and Dental Protein Studies · Forensic Anthropology and Bioarchaeology Studies