Search results
Results from the WOW.Com Content Network
Shovel-shaped incisors. Shovel-shaped incisors and non-shovel-shaped incisors. Shovel-shaped incisors (or, more simply, shovel incisors) are incisors whose lingual surfaces are scooped as a consequence of lingual marginal ridges, crown curvature, or basal tubercles, either alone or in combination. [1]
Hominid dental morphology evolution. Changes to the dental morphology and jaw are major elements of hominid evolution. These changes were driven by the types and processing of food eaten. The evolution of the jaw is thought to have facilitated encephalization, speech, and the formation of the uniquely human chin.
The upper first incisors and upper second incisors are shovel-shaped, and they are "not aligned with the other teeth". [10] The upper first premolar has one root, and the lower first molar in Sinodonts has three roots (3RM1). [10] [5]
The majority are crown and root shape variants, although the system also includes some skeletal variants of the maxilla and mandible. Most of the variants occur at different frequencies in human populations around the world. [3] Examples of dental variants listed in the ASUDAS are shovel-shaped incisors, Carabelli cusps, or hypocones.
The upper incisors are shovel-shaped (the lingual, or tongue, side is distinctly concave), a feature characteristic of other Eurasian human populations, including modern. The canines bear the cingulum (a protuberance toward the base) and the essential ridge (toward the midline) like more derived species, but retain the cuspules (small bumps ...
The multiregional hypothesis, multiregional evolution (MRE), or polycentric hypothesis, is a scientific model that provides an alternative explanation to the more widely accepted "Out of Africa" model of monogenesis for the pattern of human evolution. Multiregional evolution holds that the human species first arose around two million years ago ...
Anatomical terminology. [edit on Wikidata] The maxillary central incisor is a human tooth in the front upper jaw, or maxilla, and is usually the most visible of all teeth in the mouth. It is located mesial (closer to the midline of the face) to the maxillary lateral incisor. As with all incisors, their function is for shearing or cutting food ...
1938. Discovered by. Alexey Okladnikov. Map. Teshik-Tash 1 is a Neanderthal skeleton discovered in 1938 in Teshik-Tash Cave, in the Bajsuntau mountain range, Uzbek SSR (Uzbekistan), Central Asia. The remains were discovered in 1938 by A. P. Okladnikov. [2] They were found in a shallow pit, reported to be associated with five pairs of Siberian ...