Oligopithecus savagei
Encyclopedia
Oligopithecus savagei is a fossil
primate
that lived in Africa
during the Early Oligocene
. This species
is only known from one jaw bone
and was found in Egypt
. As a propliopithecoid, it is older than the ape and New World monkey split, yet is more related to either of those groups than it is to any other primates.
is narrow. It also resembles the callitrichines more than the catarrhines. The lower third premolar is sectorial. Oligopithecus savagei has primitive molars as compared to other haplorrhines. The lower molars have a trigonid which is higher than the talonid. The lower molars also have a long and obliquely directed cristid obliqua and a small paraconid on the first molar. The lower molars of this species had sharply defined and high occlusal crests and cusps. Based upon the jaw bone, Oligopithecus savagei had a body mass of 1.5 kilograms.
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...
primate
Primate
A primate is a mammal of the order Primates , which contains prosimians and simians. Primates arose from ancestors that lived in the trees of tropical forests; many primate characteristics represent adaptations to life in this challenging three-dimensional environment...
that lived in Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
during the Early Oligocene
Oligocene
The Oligocene is a geologic epoch of the Paleogene Period and extends from about 34 million to 23 million years before the present . As with other older geologic periods, the rock beds that define the period are well identified but the exact dates of the start and end of the period are slightly...
. This species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
is only known from one jaw bone
Mandible
The mandible pronunciation or inferior maxillary bone forms the lower jaw and holds the lower teeth in place...
and was found in Egypt
Egypt
Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...
. As a propliopithecoid, it is older than the ape and New World monkey split, yet is more related to either of those groups than it is to any other primates.
Morphology
Oligopithecus savagei has a dental formula of ?:1:2:3 on the lower jaw. The canine is relatively small and the front premolarPremolar
The premolar teeth or bicuspids are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant, making eight premolars total in the mouth. They have at least two cusps. Premolars can be considered as a 'transitional tooth' during chewing, or...
is narrow. It also resembles the callitrichines more than the catarrhines. The lower third premolar is sectorial. Oligopithecus savagei has primitive molars as compared to other haplorrhines. The lower molars have a trigonid which is higher than the talonid. The lower molars also have a long and obliquely directed cristid obliqua and a small paraconid on the first molar. The lower molars of this species had sharply defined and high occlusal crests and cusps. Based upon the jaw bone, Oligopithecus savagei had a body mass of 1.5 kilograms.
External links
- http://members.tripod.com/cacajao/oligopithecus_savagei.html
- Mikko's Phylogeny archive