Pappotherium

Pappotherium is an extinct genus of mammals from the Albian of Texas, US, known from a fossilized maxilla fragment bearing two tribosphenic molars, discovered within the Glen [Rose Formation] near Decatur, Wise County, Texas.
The fossil was discovered by Bob H. Slaughter within some deposits dating back to 112.6 – 109 million years ago. On the basis of the morphology of the molars' cusps, in 1965 Slaughter established the new genus Pappotherium and the new species P. pattersoni; he also created an apposite family, Pappotheriidae. Both this family and the genus are nowadays still monotypic.
Slaughter argued that Pappotherium should have been a basal form close to the metatherian-eutherian divergence point; this mammal likely was an arboreal insectivore.
Etymologically speaking, the name Pappotherium is a compound of the Latin words pappus and therium, with the full meaning of "mammal-grandfather".
The second part of the unique species' name, pattersoni, was instead chosen in honor of the American paleontologist Bryan Patterson.
More recently, it has been recovered as a possible deltatheroidean. The most recent phylogeny including Pappotherium is reproduced below.