Smaller than a Microraptor!

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A life restoration of Wakaleo oldfieldi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Infraclass: Marsupialia
Order: Diprotodontia
Family: Thylacoleonidae
Genus: Wakaleo
Clemens & Plane, 1974
Referred species
  • Wakaleo alcootaensis
  • Wakaleo crassidentatus
  • Wakaleo hilli

Wakaleo (indigenous Australian waka, "little", "small", and Latin leo, "lion") was a genus of medium-sized thylacoleonids that lived in Australia in the early to late Miocene. It was approximately 2.5 ft (80 cm) long, or the size of a dog. Although much smaller than its close relative, the marsupial lion (Thylacoleo carnifex), Wakaleo would have been a successful hunter in its time. It had teeth specially designed for cutting and stabbing. The ocelot-sized predator Wakaleo, along with its jaguar-sized relative Thylacoleo, were closely related to the extant wombat. It would've probably weighed in at 20 kg, however, other sources stated that it could reach 50 kg.


Wakaleo was discovered in 1974 by William A. Clemens Jr. and M. Plane.