The flattooth is the descendant of boars, adapted to search food at sea coast. But this species eats quite other kind of food, than huge sea birds of Neocene: judge by its constitution it is visible, that this beast is useless as the fisher. The flattooth eats basically vegetative food though it is not squeamish also inactive sea animals - the euryphagy is inherited by it from an ancestor, the boar widely inhabited Eurasia in Holocene. The animal is remarkable by massive large head (its length is up to 1,2 m). Incisors of the bottom jaw jut out forward like a scraper, allowing to tear off from stones seaweed, molluscs and sedentary crustaceans. The gristly snout, characteristic feature of pig appearance, has turned at this animal to fleshy and mobile organ of capture of the food, similar to the trunk of some mastodons (like Platybelodon on which the flattooth is convergent similar). Lateral parts of flattooth’s trunk are mobile and operate as thumbs of the mitten, allowing to grasp bunches of a grass dexterously and to put them in the mouth.
Body is low (1 meter at a shoulder), but long - up to 1,7 m not including head. Legs are short and strong, hand and foot of this animal differ by specialization: behind fingers the special fat pillow was developed (as at elephants), taking up weight of the body. It forms the “foot” of special sort, wide and round, allowing to go on the viscous ground, not failing through it. Hoofs are reduced and look more similar to nails. Tail is short, on the end of it there is hairy brush. Wool is thin, grey color. At mature animals on shoulders the large fat hump develops, and at males canines of the top jaw are bent as half rings upwards and back. At females canines are short and straight, jutting out from the mouth only a little.
This animal is solitary, but on extensive shallows and islands with the indented shore line it can keep by groups of 3 - 5 animals: the number of animals inhabiting any territory is limited with food resources. Animals can swim and dive, getting seaweed from depths up to 5 meters. In breeding season the male freely moves between foraging areas of several females. In northern part of an area cubs are born in the summer when water well gets warm. Too early born cubs risk to catch a cold and die. But at the south the seasonal prevalence in breeding of this species is not present, though the peak of birth rate falls to summer. In litter (1 time in 2 years) there are up to 3 - 4 cubs, as usual twins. They grow quickly, feeding first time with extremely fat milk, later pass to the forage of adult animals. At the age of 8 months they become independent though keep on mother’s territory.
Voice of an adult animal is the roar, amplifying by blown out nasal ducts, cubs grunt. The scared animal loudly squeals.