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Mesonychidae (meaning "middle claws") is an extinct family of small to large-sized omnivorous-carnivorous mammals.They were endemic to North America and Eurasia during the Early Paleocene to the Early Oligocene, and were the earliest group of large carnivorous mammals in Asia.
Mesonychia ("middle claws") is an extinct taxon of small- to large-sized carnivorous ungulates related to artiodactyls. Mesonychians first appeared in the early Paleocene, went into a sharp decline at the end of the Eocene, and died out entirely when the last genus, Mongolestes, became extinct in the early Oligocene. In Asia, the record of ...
Most terrestrial ungulates use the hoofed tips of their toes to support their body weight while standing or moving. Two other orders of ungulates, Notoungulata and Litopterna, both native to South America, became extinct at the end of the Pleistocene, around 12,000 years ago. The term means, roughly, "being hoofed" or "hoofed animal".
Their unusually shaped feet are quite similar to that of ungulates, and fossil evidence suggests that there once existed a larger diversity of elephant species whose body structure puts them in ...
The physical destruction of a habitat, both directly (deforestation for land development or lumber) and indirectly (burning fossil fuels), is an example of this. [7] [8] Also, increasing toxicity, through media such as pesticides, can kill off a species very rapidly, by killing all living members through contamination or sterilizing them.
Construction at a high school uncovered millions of fossils dating back nearly 9 million years.. The fossils include unique species of fish that had never been found in the area before. The ...
During recent construction work at a Los Angeles high school, millions of fossils were unearthed, many of which were marine life-like fish and sea turtles. Fossils dating back 9 million years ...
Primitive "sub-ungulate"s were among the other discoveries made on the expedition. They also found herbivorous condylarth fossils one of these, Phenacodus, was more than four feet long, which makes it unusually large for the group. Lastly, the expedition also found fossils of the carnivorous creodonts and bear-like clenodonts. [18]