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or extinct have a pair of upper incisors pointing upward and the lower incisor became less prominent.....more
椎長鼻目嵌齒象Most of the elephants only have a pair of incisors (upper or lower) and only Gomphotherium sp.....more
was ground to the diamond shape. The last teeth in the back of upper and lower jaws had the thickness.....more
structures. Generally speaking, the upper and lower jaws of these whales have 7 to 9 pairs of teeth.....more
primigenius had bulged forehead and short lower jaw. Mammuthus primigenius had dense and enamel plates.....more
ice river. Lower sea level worldwide helped the formation of land path and thus, Stegodon sp. was able.....more