crownward造句

• Similarly, its elasmoid scales lack superficial odontodes composed of dentine and enamel; this loss appears to be a synapomorphy with more crownward tetrapodomorphs.
• The wing skeleton of Perudyptes preserves a combination of plesiomorphic features also observed in the basal penguin " Waimanu " and derived features shared with more crownward penguins.