Re: [dinosaur] Solenodon venom evolution since Cretaceous (free pdf)

["David Marjanovic" <david.marjanovic@gmx.at>]

Funnily enough, that paper _still_ uses the oldest "erinaceomorph", the tooth 
taxon *Litolestes* from the late Paleocene, to calibrate the split between 
Erinaceidae and Soricidae. As usual, it cites outdated secondary literature for 
that (in this case the great big morphological placental phylogeny by Leary et 
al. 2013). The other two calibrations are largely defensible, though; that, 
together with finding very short branch lengths in Eulipotyphla and allowing 
enough rate variation between clades, appears to have been enough to keep the 
entire eulipotyphlan crown-group in the Cenozoic.
Â
In passing, the paper also mentions the age of the oldest known crown-group 
carnivoran as 42 Ma, citing a work from 2006. In larger analyses (i.e. since 
2012), the 42.8-Ma-old *Tapocyon* has been found outside the crown-group; that 
means the oldest members of the crown-group are only about 38 Ma old.
Â
Interesting phylogenetic position for the moles (to the extent that it _is_ a 
position, given all the incomplete lineage sorting).

Gesendet:ÂMittwoch, 27. November 2019 um 19:09 Uhr
Von:Â"Alberta Claw" <albertonykus@gmail.com>

> Indeed. A recent paper looking at this problem from a phylogenomic 
> perspective is:
>
> Sato, J.J., T.M. Bradford, K.N. Armstrong, S.C. Donnellan, L.M. 
> Echenique-Diaz, G. BeguÃ-Quiala, J. GÃmez-DÃez, N. Yamaguchi, S.T. Nguyen, 
> M. Kita, and S.D. Ohdachi. 2019. Post K-Pg diversification of the mammalian 
> order Eulipotyphla as suggested by phylogenomic analyses of ultra-conserved 
> elements. Molecular Phylogenetics and Evolution 141: 106605. doi: 
> 10.1016/j.ympev.2019.106605