episcopus (internal 2) share the following characters: intermediate suprameatic process (character 6, condition 1); reduced process of the ectethmoid (character 12, condition 1); long maxillopalatine process (character 13, condition 1).
Data of phenetic analysis through osteological characters does not relation Anastomus of any other genus, but it also ensures its monophyly, as observed by the present study, having as synapomorphies the characters 11 (body of the ectethmoid, condition 0, vestigial) and 30 (intercotilaris crest of the mandible, condition 1, inconspicuous) (VERHEYEN, 1959).
Of these, nine were too inconsistent within species to be useful: Shape of the lateral margin of the
ectethmoid plate, size of the supraotic fenestra, relative lengths of the metatarsal trochleae, shape of the maxillopalatine bones, shape of the internal (= medial) process of the mandible, presence and nature of the Pocock foramina (Pocock 1966), the degree of the distal bend of the tarsometatarsus, degree of the medial curve of the rostral palatine, and presence and shape of a manubrium-sternum bridge.