Unnuakomys, the northernmost marsupial

[Halichoeres]

It's not a particularly amazing specimen, about standard for a small mammal, but here's a new marsupial known from the Late Cretaceous of Alaska, before marsupials went extinct in North America (the opossums now living in North America colonized via Panama in just the last few million years). Its name is Unnuakomys hutchisoni ("Hutchinson's night-mouse" from a combination of Greek and Iñupiaq).

Here's the holotype; there are also some other teeth and jaw fragments:


And here's what it might have looked like at the foot of Edmontosaurus/Ugrunaaluk (art by James Havens):


Description appears to be open access: https://www.tandfonline.com/doi/full/10.1080/14772019.2018.1560369