Glires is a proposed clade consisting of rodents and lagomorphs (rabbits, hares, and pikas). This hypothesis that these form a monophyletic group has been long debated based on morphological evidence. Recent data (2001) based on nuclear DNA support Glires as a sister of Euarchonta to form Euarchontoglires, but some genetic data from both nuclear and mitochondrial DNA have been less supportive.

References

• 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. [1] (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=11214318&dopt=Abstract)

• 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. [2] (http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=retrieve&db=pubmed&list_uids=11214319&dopt=Abstract)

• Ulfur Arnason, et al. Mammalian mitogenomic relationships and the root of the eutherian tree. Proceedings of the National Academy of Science 99: 8151-8156.

[3] (http://www.pnas.org/cgi/content/full/99/12/8151)