Crocodiles, and their cousins, alligators, were shown to be less diversified than certain groups of mammals, birds and fish. Credit: Michael AlfaroFrom Live Science:
Mammals, birds and fish are among evolution’s "winners," while crocodiles and other reptiles have ended up on the losing end, a new study suggests.
"Our results indicate that mammals are special," said study leader Michael Alfaro of UCLA.
The research allowed scientists to calculate for the first time which animal lineages have exceptional rates of success. The so-called "winners" have more species in their group, which means they have successfully evolved and diversified into many types of environments. The losers have diversified less, even over the course of millions of years.
Read more ....
No comments:
Post a Comment