Figure 2
From: An early Oligocene fossil demonstrates treeshrews are slowly evolving “living fossils”
Sagittal sections through two lower jaw fragments of Ptilocercus kylin sp. nov. showing the tooth and alveolar loci.
(A) a right lower jaw fragment retaining the alveoli of i2-3, c, alveoli and roots of c and p2 and p3-4 (IVPP V 20694); (B) a left lower jaw fragment retaining a small portion of the i2-3 alveoli, alveoli and roots of c and p2 and p3-m3 (IVPP V20699, reversed). Scale bar equals 2 mm.
