Krusatodon is a genus of extinct docodont mammaliaform from the Middle Jurassic of the United Kingdom. It is known from multiple upper and lower molar teeth from the Forest Marble Formation, Kirtlington, in England, and also from a molar tooth and jaw from the Kilmaluag Formation on the Isle of Skye, Scotland.^[1][2]

Quick Facts Scientific classification, Binomial name ...

Krusatodon Temporal range: Middle Jurassic, 174.1–163.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Synapsida
Clade:	Therapsida
Clade:	Cynodontia
Clade:	Mammaliaformes
Order:	†Docodonta
Family:	†Tegotheriidae
Genus:	†Krusatodon Sigogneau-Russell, 2003
Species:	†K. kirtlingtonensis
Binomial name
†Krusatodon kirtlingtonensis Sigogneau-Russell, 2003

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The name Krusatodon honours the German zoologist and palaeontologist Dr. Georg Krusat, who carried out important research on docodonts and other early mammals.^[1]

Krusatodon is mainly known from a handful of individual molar teeth, and a jaw that has not yet been described.^[2] Like all docodontans, these teeth have a more complex arrangement of cusps than other groups of early mammaliaforms (the group that includes mammals). This includes a large main cusp on the lower teeth (cusp a) and a number of smaller cusps around it, with a "pseudotalonid" - a basin where food can be crushed and ground. This arrangement is similar to the tribosphenic molar seen in later mammals.