Some authors have argued this morphology is best interpreted as an intermediate evolutionary step between basal and crown catarrhines, but others have suggested it may be an intermediate developmental morphology as a similar condition is seen in some extant juvenile catarrhines.
This morphology is best interpreted as an intermediate evolutionary step between basal and crown catarrhines. This was what some authors have argued. Others have suggested. It may be an intermediate developmental morphology. A similar condition is seen in some extant juvenile catarrhines.