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Fig. 5 | BMC Evolutionary Biology

Fig. 5

From: Oldest ctenodactyloid tarsals from the Eocene of China and evolution of locomotor adaptations in early rodents

Fig. 5

Results of principal component analysis of 15 calcaneal (a) and 12 astragalar (b) measurements for 19 species. A set of lines connecting all data points represents a minimum spanning tree based on a Euclidean distance matrix. Results support Tamquammys robustus as an agile terrestrial ecomorph and T. wilsoni as a non-specialized occasionally arboreal species. Species abbreviations: A.te, Arvicola terrestris; C.cr, Cricetus cricetus; C.lu, Cynomys ludovicianus; G.el, Gomphos elkema; G.gl, Glis glis; M.ma, Marmota marmota; M.mu, Mus musculus; O.pa, Ochotona pallasi; O.zi, Ondatra zibethicus; Par., paramyid; P.sp., Paramys sp.; Pur., Purgatorius; R.no, Rattus norvegicus; S.da, Sciurotamias davidianus; S.vu, Sciurus vulgaris; T.gl, Tupaia glis; T.mi, Tribosphenomys minutus; T.ro, Tamquammys robustus; T.wi, Tamquammys wilsoni. AS, Arshantan ALMA; IM, Irdinmanhan ALMA

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