History of animal testing of visual areas in cats and monkeys, and provided physiological evidence for the critical period for the development of disparity sensitivity in vision (i.e.: the main cue for depth perception), and were awarded a Nobel Prize for their work. In 1996 Dolly the sheep was born, the first mammal to be cloned from an adult cell. The process by which Dolly the sheep was cloned utilized a process known as nuclear transfer applied by lead scientist Ian Wilmut. Although other scientists were not immediately able to replicate the experiment, Wilmut argued that the experiment was indeed repeatable, given a timeframe
Mammal species included 96 recently extinct. The word "[[:wikt:mammal|mammal]]" is modern, from the scientific name "Mammalia" coined by Carl Linnaeus in 1758, derived from the [[Latin language|Latin]] "[[wikt:mamma#Latin|mamma]]" ("teat, pap"). In an influential 1988 paper, Timothy Rowe defined Mammalia [[Phylogenetics|phylogenetically]] as the [[crown group]] of mammals, the [[clade]] consisting of the [[most recent common ancestor]] of living [[monotreme]]s ([[echidna]]s and [[platypus]]es) and [[theria]]n mammals ([[marsupial]]s and [[placental]]s) and all descendants of that ancestor. Since this ancestor lived in the [[Jurassic]] period, Rowe's definition excludes all animals from the earlier [[Triassic]], despite the fact that Triassic fossils in the [[Haramiyida]] have been