''Rosieria'' is an extinct genus of dwarf

cynodont The cynodonts () (clade Cynodontia) are a clade of eutheriodont therapsids that first appeared in the Late Permian (approximately 260 mya), and extensively diversified after the Permian–Triassic extinction event. Cynodonts had a wide variety ...

s from the Late Triassic of France. It belongs to the family Traversodontidae, a herbivorous group known mainly from

Gondwana Gondwana () was a large landmass, often referred to as a supercontinent, that formed during the late Neoproterozoic (about 550 million years ago) and began to break up during the Jurassic period (about 180 million years ago). The final stages ...

. The type species ''R. delsatei'' was named in 1997 on the basis of a few isolated postcanine teeth found in Saint-Nicolas-de-Port in northeastern France. These teeth were found alongside the teeth of many other cynodonts, including those of '' Hahnia'', '' Gaumia'', and '' Maubeugia''. The small size of the teeth in Saint-Nicolas-de-Port suggest ''R. delsatei'' and other species were dwarf cynodonts. Most teeth in the locality belong to insectivores like dromatheriids, while those of ''R. delsatei'' and other herbivorous cynodonts are very rare.

References

Traversodontids Prehistoric cynodont genera Late Triassic synapsids of Europe Triassic France Fossils of France Fossil taxa described in 1997 Taxa named by Pascal Godefroit {{paleo-therapsid-stub