The discourse system just let me know i have earned another “merit badge” automatically awarded by the System.
I quote the text of the badge below (that particular posting has been accessed by 25 or more non-members).
And below that is the link to the article, on the rather amazing case study of a single population of marsupials (bottleneck count of the population not specified) who arrived on the Australian land mass when it was still connected to the other continents (from South America via Antarctica, before it ended up in the southern polar region).
Because this single population found no rival forms of mammals, more rapid speciation became a temporary norm, with phenotypes quickly diversifying to fill empty ecological niches!
From a single population (verified by modern genomic comparisons), at least three (3) new phenotypes emerged:
- marsupial plant-eating underground moles;
- marsupial meat-eating predator (similar to the Taz.Devil); and
- omnivorous sub-populations collectively similar to bandycoots.
Its wonderful to have an open archaeological laboratory as big as Australia… with living successors available!
This badge is granted for sharing a link that was clicked by 25 outside visitors. Thanks for spreading the word about our discussions, and this community.