Figure 7From: Historic hybridization and persistence of a novel mito-nuclear combination in red-backed voles (genus Myodes)Variation in ossification of the post-palatalbridge. Pictures of ventral views of craniums with arrows pointing to the medial shelf. A. Complete post-palatal bridge, with the dashed line highlighting the medial shelf connected to lateral parts of the palate; diagnostic of M. gapperi. B. Incomplete post-palatal bridge, with the dashed line highlighting the medial shelf, which is not connected to lateral parts of the palate; diagnostic of M. rutilus.Back to article page