Fig. 9 in Docodonts from the British Mesozoic

Fig. 9. Suggested relationships of the docodont genera based on lower molars. 1. Transverse widening of molars; formation of transverse crests. 2. Development of an incipient pseudo−talonid (anterior). 3. Reduction of mesio−lingual cusp; development of the real talonid (posterior); folding enamel. 4. Straight anterior crest. 5. Development of mesio−lingual cusp, of pseudo−talonid. 6. Folding of the enamel. 7. Vertical furrows. 8. Enlargment of disto−labialcusp. 9. Tendency to fuse lingual cusps together and labial cusps together.