Pros: Introduced in 1981, aspartame is one of the most studied sweeteners on the market. Despite the rumors, thereâs no conclusive evidence of a link between aspartame and cancer, according to the FDA and American Cancer Society.
Mammals appeared on the earth long before the extinction of the dinosaurs; in fact, dinosaurs and mammals originated within 10 million years of each other, in the late Triassic about 200 million years ago.
Most mammals today are placentals. Mammalian diversity was not so simple 125 million years ago, said Anne Weil, a research associate in the department of biological anthropology and anatomy at Duke University in Durham, North Carolina. First of all, Eomaia is not a placental mammal.t is an early, primitive representative of the lineage that eventually led to placental mammals,  said Weil. Properly, it is called a eutherian mammala mammal that is more closely related to living placentals than to living marsupials.. Fossil evidence dates the earliest mammals to 220 million years ago.