King and Beck 2019
bring us a new phylogenetic analysis restricted to Mesozoic mammals. This represents a massive case of taxon exclusion of basal mammals as demonstrated earlier here, because so many basal mammals are still alive! Think of all the tree shrews, arboreal didelphids, and nearly every little creeping taxon in Glires that nest basal to known Mesozoic mammals. You cannot restrict the taxon list to just those extremely rare Mesozoic mammals.
On the plus side,
King and Beck confirm earlier tree topologies recovered by the large reptile tree (LRT, 1394 taxa) that nest haramiyidans apart from euharamiyidans when they reported, “Tip-dating applied to Mesozoic mammals firmly rejects a monophyletic Allotheria, and strongly supports diphyly of haramiyidans, with the late Triassic Haramiyavia and Thomasia forming a clade with tritylodontids, which is distant from the middle Jurassic euharamiyidans.”
made the authors nest Vintana with euharamiyidans rather than the wombats recovered by the LRT. Other than Vintana, no wombats were included in the King and Beck study—because they are alive. Furthermore, no rodents and aye-ayes were included—because they are alive. So, sans living taxa, King and Beck’s cladogram had no idea where to nest euharamiyidans in the mammal family tree. The wide gamut taxon list of the LRT solves most problems that arise from restricted studies like the King and Beck study.
More on Mesozoic mammals
King B and Beck R 2019. Bayesian Tip-dated Phylogenetics: Topological Effects,
2 Stratigraphic Fit and the Early Evolution of Mammals. PeerJ