Catarrhini


Catarrhini

Taxobox
name = Catarrhini
fossil_range = Late Eocene – Present


image_width = 250px
image_caption = An infant Stump-tailed Macaque, held by a human hand
regnum = Animalia
phylum = Chordata
classis = Mammalia
ordo = Primates
subordo = Haplorrhini
infraordo = Simiiformes
parvordo = Catarrhini
parvordo_authority = É. Geoffroy, 1812
subdivision_ranks = Families
subdivision =
Cercopithecidae

Hylobatidae

Hominidae

Catarrhini is a parvorder of the Primates, one of the three major divisions of the suborder Haplorrhini. It contains the Old World monkeys (superfamily Cercopithecoidea, family Cercopithecidae) and the apes (superfamily Hominoidea). The latter is further divided into the lesser apes (family Hylobatidae), consisting of the gibbons; and the hominids or great apes (family Hominidae), consisting of the orangutans, gorillas, chimpanzees, and humans. Older references described humans and their most close extinct relatives/ancestors as a family on its own and placed the great apes in the family Pongidae. The other two major divisions of the suborder Haplorrhini are the prosimian tarsiers, which were formerly classified with the strepsirrhines, and the Platyrrhini (New World monkeys), which live in both South America and Central America.

Catarrhini means narrow nose, and the term describes their narrow, downward pointing nostrils. Unlike the platyrrhini, they are generally diurnal and their tails (if they have tails at all) are not prehensile. They have flat fingernails.

Their dental formula is dentition2 | 2.1.2.3|2.1.2.3

Most species show considerable sexual dimorphism and do not form a pair bond. Most, but not all, species live in social groups. They are all native to Africa and Asia.

Classification and evolution

The apes and Old World monkeys split from their New World monkey kin about 40 million years ago. The major catarrhine division occurred about 25 mya, with the gibbons separating from the great apes and humans about 18 mya.

* Parvorder Catarrhini
** Superfamily Cercopithecoidea
*** Family Cercopithecidae: Old World monkeys
** Superfamily Hominoidea
*** Family Hylobatidae: gibbons
*** Family Hominidae: great apes and humans

References

*MSW3 Groves|pages=152-184

External links

*http://www.chimpanzoo.org/catarrhi.html


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