Triconodontidae

Triconodontidae Temporal range: Middle Jurassic - Late Cretaceous, 190–70 Ma PreЄ Є O S D C P T J K Pg N

Triconodon mordax jaw, Richard Owen 1861
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Eutriconodonta
Family:	†Triconodontidae Marsh, 1887
Type species
†Triconodon mordax Owen, 1859
Genera
Alticonodon Fox, 1969 Arundelconodon Cifelli et al., 1999 Astroconodon Patterson, 1951 Corviconodon Cifelli et al., 1998 Eotriconodon Sigogneau-Russell, 2016 Meiconodon Kusuhashi et al., 2009 Priacodon Marsh, 1887 Triconodon Owen, 1859 Trioracodon Simpson, 1928 Victoriaconodon Montellano et al., 2008

Triconodontidae is an extinct family of actively mobile mammal, endemic to what would be North America, Europe, Africa and probably also South America and Asia during the Jurassic through Cretaceous periods at least from 190—70.6 mya. They are distinguished from amphilestids and gobiconodontids due to their occlusion patterns: instead of interlocking mollars, triconodontids fit their teeth more directly, with lower cusp "a" occluding anteriorly to upper cusp "A", between "A" and "B".

Triconodontidae was named by Marsh (1887). It was assigned to Polyprotodontia by Cope (1889); to Triconodonta by Rasmussen and Callison (1981), Bonaparte (1986), Carroll (1988) and Engelmann and Callison (1998); and to Mammalia by Marsh (1887) and Luo et al. (2001).

Family †TriconodontidaeMarsh 1887

Figure below is based on Martin et al. 2015.

Sometimes Volaticotheria is recovered as a part of this group. However, most recent phylogenetic studies seem to group it outside of Triconodontidae.

Cladogram after Thomas Martin et all 2015

...
Wikipedia