Peraiocynodon major, Sigogneau-Russell, 2003

Sigogneau-Russell, Denise, 2003, Docodonts from the British Mesozoic, Acta Palaeontologica Polonica 48 (3), pp. 357-374 : 359

Peraiocynodon major sp. nov.

Fig. 3D .

Holotype: BMNH J.693, a left lower molariform

Derivation of the name: major , L., larger.

Material.—J.679, a right lower molariform.

Distribution.—Clay Band, Kirtlington mammal bed in Forest Marble; upper Bathonian.

Diagnosis.—Differs from P.inexpectatus by the much larger size, the anterior narrowness, the absence of an antero−basal crest and the total absence of a lingual ridge. Mesio−lingual cuspule and mesio−labial cusp better individualized; posterior concavity more accentuated.

Figures

Fig. 3. A. Krusatodon kirtlingtonensis gen. et sp. nov., left lower molar BMNH J. 784, in lingual (A1), labial (A2), occlusal (A3), anterior (A4), and posterior (A5) views. B. Krusatodon kirtlingtonensis gen. et sp. nov., right lower molar BMNH J. 526, in occlusal view. C. Peraiocynodon inexpectatus, holotype lower molariforms BMNH M 48248, in lingual view, drawn from cast. D. Peraiocynodon major sp. nov. holotype left lower molariform BMNH J. 693 in lingual (D1), labial (D2), anterior (D3), posterior (D4), and occlusal (D5) views. Upper scale bar is for A–C, lower for D. Scale bars 1 mm.