
Lekaneleo, nicknamed Leo, was at home to Adels Grove and the Riversleigh World Heritage area, a short 23 million years ago.
The cat was about the size of today’s domestic cats, and it was previously believed to be part of the Priscileo roskellyae (Thylacoleonidae) genus because of its teeth — with three premolars and four molars — and because of its relatively small size.
“And this guy, this new one, we’ve only just recognised is highly different than any of the other previous ones we’ve seen — that’s why it’s been described now as a new genus of marsupial lion.”
Alongside the Lekaneleo, some of the other marsupial lions found at Riversleigh include the Microleo attenboroughi, named for Sir David, the Wakaleo schouteni which was about the size of a panther, and larger lions the Thylacoleonids.
https://www.abc.net.au/news/2020-02-28/australian-lion-discovered-in-outback-queensland/12007324