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Temporal range: Paleocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Multituberculata
Superfamily: Taeniolabidoidea
Family: Lambdopsalidae
Genus: Prionessus
Species: P. lucifer
Binomial name
Prionessus lucifer
Matthew and Granger, 1925

Prionessus is a genus of extinct mammal from the Paleocene of Central Asia. It was a member of the extinct order Multituberculata within the suborder Cimolodonta and superfamily Taeniolabidoidea. The genus was named by Matthew W.D. and Granger W. in 1925 and is based on a single species.

The species Prionessus lucifer was named by Matthew W.D. and Granger W. in 1925. Fossil remains have been found in the Upper Paleocene strata of Gashato, Naran and Nomogen in Bayan Ulan of Mongolia and China.


  • Matthew and Granger (1925), "Fauna and Correlation of the Gashato Formation of Mongolia". Am. Museum Novitates 189, p. 1-12.
  • Kielan-Jaworowska Z. and Hurum J.H. (2001), "Phylogeny and Systematics of Multituberculate Mammals". Paleontology 44, p. 389-429.
  • Much of this information has been derived from [1] MESOZOIC MAMMALS: Eucosmodontidae, Microcosmodontidae and Taeniolabidoidea, an Internet directory.