) is a clade
consisting of rodents
, and pikas
). This hypothesis that these form a monophyletic
group has been long debated based on morphological evidence, although recent morphological studies strongly support monophyly of Glires (Meng and Wyss, 2001; Meng et al., 2003). In particular, the discovery of new fossil
material of basal
members of Glires, particularly the genera Mimotona
, and Sinomylus
, has helped to bridge the gap between more typical rodents and lagomorphs (Meng et al., 2003; Asher et al., 2005). Data based on nuclear
DNA support Glires as a sister of Euarchonta
to form Euarchontoglires
(Murphy et al. and Madsen et al. 2001), but some genetic data from both nuclear and mitochondrial DNA
have been less supportive (Arnason et al. 2002). A study investigating retrotransposon presence/absence data
unambiguously supports the Glires hypothesis (Kriegs et al. 2007).
- Asher R.J., J. Meng, J.R. Wible, M.C. McKenna, G.W. Rougier, D. Dashzeveg, and M.J. Novacek, 2005. Stem Lagomorpha and the antiquity of Glires. Science 307:1091-1094. Abstract
- Madsen O., M. Scally, C. J. Douady, D. J. Kao, R. W. DeBry, R. Adkins, H. M. Amrine, M. J. Stanhope, W. W. de Jong, M. S. Springer, 2001 Parallel adaptive radiations in two major clades of placental mammals. Nature 409:610-614.
- Meng J., Y. Hu, C. Li, 2003. The osteology of Rhombomylus (Mammalia, Glires): implications for phylogeny and evolution of Glires. Bulletin of the American Museum of Natural History 275:1-247.
- Meng, J., and A.R. Wyss, 2001. The morphology of Tribosphenomys (Rodentiaformes, Mammalia): phylogenetic implications for basal Glires. Journal of Mammalian Evolution 8(1):1-71.
- Murphy W. J., E. Eizirik, W. E. Johnson, Y. P. Zhang, O. A. Ryder, S. J. O'Brien, 2001a. Molecular phylogenetics and the origins of placental mammals. Nature 409:614-618.
- Ulfur Arnason, et al. Mammalian mitogenomic relationships and the root of the eutherian tree. Proceedings of the National Academy of Science 99: 8151-8156.
- Jan Ole Kriegs, Gennady Churakov, Jerzy Jurka, Jürgen Brosius, and Jürgen Schmitz (2007) Evolutionary history of 7SL RNA-derived SINEs in Supraprimates. Trends in Genetics 23 (4): 158-161 (PDF version )