Catarrhini

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Catarrhini

the primate group containing the Old World apes and monkeys and man. Members of this group have an internasal septum and a bony external ear passage. Compare PLATYRRHINI.
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As a student, Gingerich had worked with palaeontologist Elwyn Simons, who studied Aegyptopithecus, a primitive catarrhine from the early Oligocene.
Other topics include facial displays of catarrhine monkeys and apes, socio- sexual signals, allogrooming, variability in social organization, comparative aspects of communication, the effects of social companions on mother-infant relationships, and an ethological study of some aspects of social behavior of children in nursery school.
The other line, the catarrhine or Old World monkeys, is generally as large or larger than the largest of New World monkeys, and some of them have become highly terrestrial.