In the early Neocene, approximately 7 - 8 million years after the mass extincion , the geography of the New World have changed : the Isthmus of Panama submerged and South America split off from north america . The fauna of the continents began to develop in isolation, and soon on both continents there were only a few common species of birds and other flying animals. But the isolation of the continents was incomplete. two lithospheric plates, the Caribbean and Coconut, moving next to each other, To form more or less a continuous land bridge, which was used by species from South America to began to penetrate to the north. large running rodents , the deermaras (Cervimara) arrived to north america North America. Those animals evolved from the modern maras (Dolichotis) but due the process of evolution deermaras became theyre own family , Cervimaridae .
Some of the animals prefer to stay on the islands, adapting to the new environment. Among them were the very deermaras. When the climate became more favorable and damp, grassy vegetation gave way to shrubs and then changed their continuous jungle. Shifty plains
animals have adapted to these changes, becoming very small. So the mazamara evolved - a forest rodent running around in the Great Antigua.
Mazamara are tiny fragile build deermaras . Outwardly, it resembles an antelope, but weighs only about 5 kg and achieves growth of only 40 cm at the withers. mazamaa have a long neck and head in profile seems more massive because of the thick "beard", especially developed in males. The legs of this rodent thin, and nails have turned into a kind of hoof. The front leg three claw on the back - two. Mazamara runs fast and is able to perform high jumps - up to 2 meters in height with a space.
Mazamaras live in dense tropical forests and feed on relatively soft food. They eat fallen fruit trees, mushrooms, leaves big forest herbs. Small weight and sharp hooves allow it to rodent even climb the sloping tree trunks, podmytuyu river. Because diet consisting of soft wood plants, mazamaras incisors grow much more slowly than that of her relatives from the plains that eat hard grains, "spiced" with sand.
Lifestyle put another mark on the appearance of mazamaras. its fur is much brighter and more contrast than in large lowland relatives. The main colors of wool from mazamary reddish-brown. Cheeks, the tip of the muzzle, chin, thick "beard" white. Along the side of the muzzle from the nostril through the eye to the base of the ear goes black stripe separating the white and brown patches on the head. Chest and belly are white, rounded on the sides there are white spots. With this color mazamary difficult to distinguish among the shadows and rays of light in the undergrowth.
These rodents live in small herds with 1 - 2 males, around a dozen females and cubs. Between themselves, animals communicate using sounds, similar to the cooing of pigeons. Creek anxiety like a small dog yapping.
2 times a year the female gives birth to one cub, which in a few minutes after birth may follow the mother. Cub is different from adult animals darker color and less spots. It feeds milk to a month old, but already in the first days of life is trying to feed adult animals. Mazamaras have remained characteristic of its ancestors posture cub feeding: feeding the female sits on its hind legs and calf suck milk, lying on his stomach.
At the age of four months young mazamaras weight reaches 3,5 - 4 kg. A six-month females can themselves produce offspring.