mesonychians造句

• A recent study found them to be a paraphyletic assemblage of stem-mesonychians.
• Mesonychians are depicted as " wolves on hooves " and were the first major mammalian predators, appearing in the Paleocene.
• By the early Eocene the arctocyonids were supplanted by the hyaenodonts, mesonychians and the early carnivorans such as " Miacis ".
• Despite the DNA and immunological evidence, some researchers had believed whales are related to extinct carnivores called Mesonychians, which had teeth suited for eating fish.
• Rose said the new findings " provide compelling evidence that whales are not just related to, but descended from, artiodactyls rather than mesonychians ."
• Until now, paleontologists, citing anatomical evidence, had contended that whales evolved from an order of ungulates called mesonychians, an extinct group of land-dwelling carnivores that resemble but are unrelated to hyenas.
• In 2001, it was concluded by Thiwissen et al . that " pakicetids were terrestrial mammals, no more amphibious than a tapir . " According to them, none of the aquatic adaptations found in the oldest obligate aquatic cetaceans, mesonychians.
• Now, however, " Hapalodectes " and other mesonychians are thought to be related to basal artiodactyls, while the Archaeoceti are now determined to be descended from more derived artiodactyls, like " Indohyus ", which are related to hippopotamuses and anthracotheres.