Insectivores and Rodents (including a Multituberculate) added to the LRT

Today several Insectivores (clade within the Mammalia)
and other taxa are added to the large reptile tree (now 744 taxa). And, no surprise, the little fur-balls nest together (subset Fig. 1). Talpa is a mole. Scutisorex is a shrew. Solenodon is, well, a solenodon!

Figure 1. the mammal subset of the large reptile tree, still fully resolved. Here insectivores nest with rodents and rabbits. Plesiadapis is often traditionally nested with primates in analyses performed by others, but does not do so here.

Figure 1. The mammal subset of the large reptile tree, still fully resolved. Here insectivores nest with rodents and rabbits. Plesiadapis is often traditionally nested with primates in analyses performed by others, but does not do so here. If some of these taxa are unfamiliar, you can Google them to retrieve their more familiar names. It’s a pretty simple tree. And, doggone it, it makes sense, too!

As you can see,
Tenrecs are no longer insectivores. Insectivores are sisters to Solenodon and that clade is a sister to the rodents + Rugosodon (Jurassic, Yuan et al. 2013), a multiuberculate mammal. Rugosodon is the oldest multituberculate so far described, so it should be one of the least derived. They have flexible ankles, according to Wikipedia.

About multituberculates
Wikipedia reports, “Multituberculates are extinct rodent-like mammals usually placed outside either of the two main groups of living mammals—Theria, including placentals and marsupials, and Monotremata[9]—but closer to Theria than to monotremes. (references on that page). Sorry to report this, but after testing in the large reptile tree, multituberculates appear to be rodent-like because they are rodent sisters. If you have any suggestions for taxa that might attract Rugosodon away from rodents, toward the base of the Mammalia, please pass them on.

A few carnivores were added.
Phoca is a seal. Procyon is a raccoon (and a bright star).

If you want to check my work
I’ll have images and pages set up at ReptileEvolution.com after the upcoming weekend. Otherwise, nearly all the images I used for data were Googled. So you can find the same data online.

References
Yuan CX, Ji Q, Meng QJ, Tabrum AR, Luo ZX 2013. Earliest evolution of multituberculate mammals revealed by a new Jurassic fossil”. Science 341 (6147): 779–783. doi:10.1126/science.1237970.

 

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7 thoughts on “Insectivores and Rodents (including a Multituberculate) added to the LRT

  1. I see that not only are you shittig all over morphological analysis, but also over genetics as well. Even if your hilariously convoluted stitching between highly superficial similarities between rodents and multituberculates was accurate, ignoring countless genetic studies pretty much shows how desperate you are.

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