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Thecodontia (meaning 'socket-teeth'), now considered an obsolete taxonomic grouping, was formerly used to describe a diverse "order" of early archosaurian reptiles that first appeared in the latest Permian period and flourished until the end of the Triassic period. All of them were built somewhat like crocodiles but with shorter skulls, more ...
Thecodont dentition is a morphological arrangement in which the base of the tooth is completely enclosed in a deep socket of bone, as seen in crocodilians, dinosaurs and mammals, and opposed to acrodont and pleurodont dentition seen in squamate reptiles. [1] Notably, this appears to be the ancestral tooth condition in Amniota. [2]
There is still some debate about the age of Magdalenian Girl. For years, the individual was thought to be a young girl, because her wisdom teeth had not yet advanced, but new analysis indicates that her wisdom teeth were impacted, and that she was actually 25 to 35 years old when she died. [6] This is the oldest recorded case of impacted wisdom ...
New, permanent teeth grow in the jaws, usually under or just behind the old tooth, from stem cells in the dental lamina. [5] Young animals typically have a full set of teeth when they hatch; there is no tooth change in the egg. Within days, tooth replacement begins, usually in the back of the jaw continuing forward like a wave.
Only three species were able to have a more or less clear estimate of their number of teeth : C. duelferi having a number greater than 21 teeth known in the upper jaw, but unknown in the lower jaw; [20] C. petrinus with between 30 and 35 teeth in the upper and lower jaws; [71] and C. youngorum having 43 teeth in the upper jaw and more than 31 ...
Prolacerta was probably a small, active, terrestrial carnivore or insectivore due to its fang-like teeth of roughly the same size and shape. Prolacerta is considered to have been a quadruped , although due to its hind limbs being larger and longer than its front limbs, there is a possibility that it was habitually bipedal during high activity ...
A diphyodont is any animal with two sets of teeth, initially the deciduous set and consecutively the permanent set. [1] [2] [3] Most mammals are diphyodonts—as to chew their food they need a strong, durable and complete set of teeth. Diphyodonts contrast with polyphyodonts, whose teeth are constantly replaced.
A BaTonga woman with extracted front teeth, for beauty purposes.. Tooth ablation (also known as tooth evulsion, dental evulsion and tooth extraction) is the deliberate removal of a person's healthy teeth, and has been recorded in a variety of ancient and modern societies around the world.