comment on this calibration

Mus - Rattus

 node name
Mus - Rattus     Look for this name in NCBI   Wikipedia   Animal Diversity Web
  recommended citations Benton et al. 2015
  node minimum age
10.4 Ma
The Dhok Pathan Formation is dated by means of detailed field stratigraphic study, including magnetostratigraphy and radiometric dating (Johnson et al., 1985; Barry et al., 2002). These indicate an absolute age in the vicinity of 10.4 Ma, within the Tortonian stage. The upper limit of the Tortonian is 7.246 Ma (Gradstein et al., 2012).
  node maximum age
14 Ma
The soft maximum constraint on this date is taken as the oldest record of Antemurus at 14.0 Ma, correlating with the Langhian stage with a lower bound of 16 Ma.
 primary fossil used to date this node 
YGSP 7720
Karnimata darwini, Jacobs, 1978
Location relative to the calibrated node: Crown

[show fossil details]
     Locality: Siwalik
     Stratum: Dhok Pathan Formation
     Geological age: Miocene, Neogene, Cenozoic

  phylogenetic justification
Karnimata is identified by phylogenetic analysis as a member of the Rattus-Mus clade within crown Murinae, closer to Rattus than Mus (Jacobs and Flynn, 2005).
  phylogenetic reference(s)
acobs, L.L. and Flynn, L.J. 2005. Of mice... again: the Siwalik rodent record, murine distribution, and molecular clocks, p. 63-80. In Lieberman, D., Smith, R., and Kelley, J. (eds) Interpreting the past: Essays on human, primate and mammal evolution. Brill Academic Publishers, Leiden.
 tree image (click image for full size) 
tree image
Figure 11 of Benton et al. (2014)