Deltatherium fundaminis (Cope 1881, middle Paleocene 60 mya, 14 cm skull length, cat-sized, AMNH 16610) this former creodont and former tillodont nests with Arctocyon within the Mesonyx clade. Wikipedia reports, "its relatives are far from clear." Here Sinonyx is a relative. The large cranial crest anchored large jaw muscles.

Sinonyx jiashanensis (Zhou et al. 1995; late Paleocene, 55 mya; 28 cm skull length) was also originally considered a mesonychid. Here Sinonyx nests with Andrewsarchus as an anagalid. It had 11 teeth (x4) including 4 blunt molars and a tall sagittal crest over the narrow cranium.

Wikipedia reports that scientists once thought of Sinonyx as a whale ancestor, but now consider artiodactyls close to hippos as whale ancestors. Both suffer from taxon exclusion.

Andrewsarchus mongoliensis (Osborn 1924; middle Eocene, 45 mya; AMNH 20135; 83cm skull length) was traditionally considered a mesonychid, then an artiodactyl related to entelodonts and whales, Andrewsarchus is here recognized as a giant extinct elephant shrew, a type of leptictid, known from its skull only. Derived from a sister to Leptictis, Andrewsarchus was probably the last of its kind, based on its size. The post-crania is unknown, but based on phylogenetic bracketing. the hind limbs would have been more robust than the forelimbs.

Paratriisodon henanensis (Chow 1959; early Late Eocene) based on a partial mandible and palate was also originally considered a creodont, but here shares many traits with Andrewsarchus.

Harpagolestes macrocephalus (Worthman 1901; late Paleocene, 50 mya) was also originally considered a mesonychid. Here it nests between Sinonyx and Andrewsarchus. Like the former, the orbit is at mid length. Like the latter, the rostrum was straight with a high point just posterior the orbit. The fourth molar was a vestige. The zygomatic arch was robust. The exoccipitals extended far posterior to the rest of the occiput.

Barinya wangala (Wroe 1999; Miocene) was considered the oldest member of the Dasyuridae, but here nests with Harpagolestes macrocephalus and Andrewsarchus.