subject: monotremes

A Time Before Nipples

A Time Before Nipples

What was milk like long ago in evolutionary history? In the absence of a time machine, the next best way to answer this question is to take what is known about the diversity of living mammals and work backwards using deductive logic, just like Sherlock Holmes. Recently, progress in this area has received a major boost from two papers about the different sugars found in monotreme milk—monotremes being the wackiest and most ancestral-like of the mammal groups, with membership so exclusive it is limited to only two kinds, the platypus and the echidna. Read More...