Others however (inclusive of Tritylodon and Microlestes, if they be really mammals), seem nearer to the Monotremata; and the question has yet to be decided whether placentals and marsupials on the one hand, and monotremes on the other are not independently derived from reptilian ancestors.
monotremes הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד