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The rhinarium (Neo-Latin, "belonging to the nose"; pl.: rhinaria) [1] is the furless skin surface surrounding the external openings of the nostrils in many mammals. Commonly it is referred to as the tip of the snout , and breeders of cats and dogs sometimes use the term nose leather .
A snout is the protruding portion of an animal's face, consisting of its nose, mouth, and jaw. In many animals, the structure is called a muzzle , [ 1 ] rostrum , beak or proboscis . The wet furless surface around the nostrils of the nose of many mammals is called the rhinarium (colloquially this is the "cold wet snout" of some mammals).
Rhinogrades are mammals characterized by a nose-like feature called a "nasorium", the form and function of which vary significantly between species. [ 4 ] [ 7 ] According to Stümpke, the order's remarkable variety was the natural outcome of evolution acting over millions of years in the remote Hy-yi-yi islands.
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(A) through (D) possess a rhinarium and are strepsirrhines, whereas (E) does not and is a haplorhine. Strepsirrhines have a long snout that ends in a moist and touch-sensitive rhinarium, similar to that of dogs and many other mammals. The rhinarium is surrounded by vibrissae that are also sensitive to touch.
A proboscis (/ p r oʊ ˈ b ɒ s ɪ s,-k ɪ s /) is an elongated appendage from the head of an animal, either a vertebrate or an invertebrate. In invertebrates, the term usually refers to tubular mouthparts used for feeding and sucking. In vertebrates, a proboscis is an elongated nose or snout.
The critter’s robust skull had additional bones and elements that have likely disappeared with evolution, and its elongated snout paired with a short region of the skull behind the eyes was ...
The ichthyosaurs, described as highly specialized aquatic reptiles, were distant relatives of lizards. They had an elongated snout, with four fins (two front and two rear) and a dorsal fin.