This 2013 video from the USA says about itself:
A tiny, furry-tailed creature was the earliest ancestor of placental mammals — a widely diverse group of animals ranging from bats to humans — according to a new study by a team of international scientists, including a core group of Museum researchers. In findings published in the February 8 issue of the journal Science, the researchers analyzed the world’s largest dataset of genetic and physical traits to find that placental mammals diversified into present-day lineages much later than is commonly thought: after the extinction event 65 million years ago that eliminated non-avian dinosaurs. This finding, and the visualization of the placental ancestor — an insect-eating animal that weighed less than a pound — was made with the help of a cloud-based and publicly accessible database called MorphoBank.
MorphoBank is an initiative funded primarily by NSF with additional support…
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