The maxillary canal in Cynognathus and Diademodon (Cynodontia, Cynognathia)
摘要
The maxillary canal system in Cynognathus and Diademodon is described. The hypothesis that expansion of the maxillary sinus represents a synapomorphy of the clade Cynognathia is supported. A trend towards the reduction of the inferior palpebral ramus is proposed.