Final answer:
Order Scandentia, known as treeshrews, are small, arboreal mammals classified under the Euarchontoglires group, distinct from true shrews, and predominantly found in Southeast Asia.
Step-by-step explanation:
Order Scandentia, also known as treeshrews, belongs to the class of mammals within the broader mammalian classification system. These small mammals are part of the Euarchontoglires group, which also includes primates, rodents, and lagomorphs (rabbits and hares).
Scandentia are characterized by their arboreal (tree-dwelling) lifestyle, and they are predominantly found in the forests of Southeast Asia. Treeshrews have a close resemblance to squirrels and are noted for their sharp, pointed snouts and elongated bodies. Despite their name, treeshrews are not true shrews and have distinct differences in their genetic makeup and physical characteristics from the members of the order Soricomorpha, to which true shrews belong.
In the evolutionary context, Scandentia was once thought to be closely related to primates, but recent genetic studies have shown that they do not share a direct ancestor with primates in the recent past, despite some similarities in behavior and ecological niches.