Triconodontidae

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Triconodontidae
Temporal range:
Ma
Triconodon mordax jaw, Richard Owen 1861
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Clade: Eutriconodonta
Family: Triconodontidae
Marsh, 1887
Subgroups

Triconodontidae is an extinct

mya.[4][1]

Triconodontids can be distinguished from other eutriconodonts by the shape of their

mammaliaform Morganucodon.[4] However, a 2020 study on Priacodon suggests that triconodontids occluded their molars in the same manner as other eutriconodonts (so-called "embrasure occlusion"), with the middle cusp (cusp A/a) fitting between two opposing molars.[5]

Taxonomy

Triconodontidae was named by Marsh (1887). It was assigned to

Mammalia by Marsh (1887) and Luo et al. (2001).[6]

Sometimes

Volaticotheria is recovered as a part of this group.[2] However, other phylogenetic studies group it outside of Triconodontidae.[7][8]

Phylogeny

Cladogram after Gaetano & Rougier, 2011:[2]

Triconodontidae

Priacodon

Triconodon

Trioracodon

Alticonodontinae

Arundelconodon

Meiconodon

Astroconodon

Alticonodon

Corviconodon

Jugulator

Volaticotherini

Ichthyoconodon

Argentoconodon

Volaticotherium

References