''Adalatherium'' (meaning "crazy beast") is an extinct

gondwanatherian Gondwanatheria is an extinct group of mammaliaforms that lived in parts of Gondwana, including Madagascar, India, South America, Africa and Antarctica during the Upper Cretaceous through the Paleogene (and possibly much earlier, if '' Allostaff ...

that lived on Madagascar during the Cretaceous period, during the Maastrichtian. The discovery of the first nearly-complete ''Adalatherium'' skeleton from the Maevarano Formation was announced in April 2020. While typical mammals found from that era were around the size of a mouse, the skeleton found — thought to merely be a juvenile — was 60 cm (2 ft) long. It is depicted in reconstructions as being built somewhat like a badger. Its skeleton is the most complete of any Southern Hemisphere Mesozoic mammal. Additionally, the front of the skull contains more foramina than any known mammal.This 'crazy beast' was a weird early mammal that lived among dinosaurs
/ref>

References

Gondwanatheres Late Cretaceous mammals Maastrichtian life Cretaceous Madagascar Fossils of Madagascar Maevarano fauna Fossil taxa described in 2020 Taxa named by David W. Krause Taxa named by Simone Hoffmann Taxa named by Yaoming Hu Taxa named by John R. Wible Taxa named by Guillermo W. Rougier Taxa named by E. Christopher Kirk Taxa named by Joseph R. Groenke Taxa named by Raymond R. Rogers Taxa named by James B. Rossie Taxa named by Julia A. Schultz Taxa named by Alistair R. Evans Taxa named by Wighart von Koenigswald Taxa named by Lydia J. Rahantarisoa {{cretaceous-mammal-stub