User:Thorkik/Pinocetus Polonicus

= Pinocetus Polonicus = Pinocetus Polonicus is a primitive extinct baleen cetacean from the family Cetotheriidae Cabrera found in Poland, in Nowa Wieś near the village of Pińczów. It lived in the shallow Miocene Sea, 16-13.8 million years ago. A similar cetacean living in those days as Pinocetus Polonicus was Aulocetus sammarimensis Capellini differing from it in the location of the rostrum, which was shifted to the back of the skull. The cetacean had primary nasal openings, and was not a good swimmer, as indicated by only four pairs of ribs connected to the vertebrae through the head and tubercles. Pinocetus ' chest was elongated, and its cross-section from the front was oval, so that the animal's lungs were seated low, which reduced the stability of the body and the efficiency of swimming. Pinocetus ' fins could move in rotational motion thanks to the semicircular head of the humerus, but due to the elongated humerus and weakly muscled limbs, its movements were inoperable. The front part of his chest prevented him from diving deep," so he lived in the shallows.