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It was theorized that positive selection for shovel-shaped incisors over the spatulate incisors is more commonly found within cultures that used their teeth as tools due to a greater structural strength in increased shovel-shaped incisors. [2] In some instances, incisors can present a more pronounced version of this called double shovel-shaped.
Sinodonty is a particular pattern of teeth characterized by the following features: The upper first incisors and upper second incisors are shovel-shaped, and they are "not aligned with the other teeth". [11] The upper first premolar has one root, and the lower first molar in Sinodonts has three roots (3RM1). [11] [5]
Like all shrews, the Asian house shrew is plantigrade and long-nosed. The teeth are a series of sharp points to poke holes in insect exoskeletons. It is the largest of the shrew species, weighing between 50 and 100 g and being about 15 cm long from snout to tip of the tail. [8]
There are two subspecies: the Chinese water deer (H. i. inermis) and the Korean water deer (H. i. argyropus).The water deer is superficially more similar to a musk deer than a true deer; despite anatomical peculiarities, including a pair of prominent tusks (downward-pointing canine teeth) and its lack of antlers, it is classified as a cervid.
A study of the alligator in 1985 showed that snails were the most common animal in its diet at 63%, with 65% of that being river snails and 35% spiral-shelled snails. According to the survey, its diet also contained 16% rabbits , 8.3% mollusks , and 4.1% shrimp , with the remaining 6.8% being frogs, fish, and insects.
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The tiger is the largest carnivorous mammal in Asia. [1] [2]The animals living in Asia and its surrounding seas and islands are considered the fauna of Asia.Since there is no natural biogeographic boundary in the west between Europe and Asia, the term "fauna of Asia" is somewhat elusive but it is a geographical name given.
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