Yuanmoupithecus Temporal range: Late Miocene, | |
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Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Mammalia |
Order: | Primates |
Suborder: | Haplorhini |
Infraorder: | Simiiformes |
Family: | Hylobatidae |
Genus: | † Yuanmoupithecus Pan, 2006 |
Species: | †Y. xiaoyuan |
Binomial name | |
†Yuanmoupithecus xiaoyuan Pan, 2006 | |
Yuanmoupithecus is an extinct genus of gibbons that lived 8.2 to 7.1 million years ago during the late Miocene. [1] As of 2022, it is the oldest gibbon known. [2] [3] The fossils, mainly of teeth, were discovered from Yuanmou, Yunnan Province, China. The type species is Y. xiaoyuan, described by Yuerong Pan in 2006. [4]
Yuanmoupithecus fossils were discovered from the Late Miocene Xiaohe Formation in the Yuanmou Basin, Yunnan Province in southwest China. The first specimens were the first right molar and the second left molar found during an excavation between 1986 and 1990 at Fangbeiliangzi, a low hill near Xiaohe village, by a joint expedition of the Yunnan Provincial Museum, Chuxiong Prefectural Museum and the Yuanmou Man Museum. Five more teeth fragments were recovered in 1999 from Leilao village. In 2006, Yuerong Pan at the Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, gave the formal description and the scientific name. [4] Several additional teeth were collected from the surrounding areas between 2006 and 2022, including the lower face of a juvenile individual and a second left molar, which became the holotype specimen. [1] Most of the teeth were worn and incomplete and the identity of the primate could not be resolved. However, two complete teeth collected at Leilao in 2006 gave a clear picture of the fossils. Presenting the analysis of the two teeth at the American Association of Physical Anthropologists, Terry Harrison of New York University confirmed that the specimens are closely related to modern gibbons, remarking the species as "an early gibbon ancestor" in 2008. [5] The species became one of the well-established Miocene primates, as Bruce Grant, colleague of Harrison, explained:
Perhaps the most exciting finding (reported in this years AAPA meetings [in 2008]) was the discovery that Yuanmoupithecus represents the earliest known fossil gibbon. I have been hunting for ancestral gibbons all of my professional life, debunking most of the purported candidates, so I'm especially excited about these discoveries. [6]
After additional collections of seven complete teeth and an upper jaw, detailed description and evolutionary implications were published in the Journal of Human Evolution in 2022. [1] [3]
The gibbon family separated from the apes around 17 to 22 million years ago. [7] Miocene primates between 14 and 21 million years old have been known from Africa, [3] so that gibbons are presumed to originate in Africa. [8] However, there is a large gap of fossil record around 10 million years old that would link the gibbon family tree from those of African species to other parts of the world. The oldest gibbon fossils are about 2 million years old that are found in Asia. [2] At around 8.2 to 7.1 million years old, Yuanmoupithecus fits well the large gap of the missing fossil lines, and is considered to be an important intermediate species between monkeys and great apes. [9]
According to estimates, Yuanmoupithecus is about the size of modern gibbons, weighing around 16 kg. [2]
Ardipithecus is a genus of an extinct hominine that lived during the Late Miocene and Early Pliocene epochs in the Afar Depression, Ethiopia. Originally described as one of the earliest ancestors of humans after they diverged from the chimpanzees, the relation of this genus to human ancestors and whether it is a hominin is now a matter of debate. Two fossil species are described in the literature: A. ramidus, which lived about 4.4 million years ago during the early Pliocene, and A. kadabba, dated to approximately 5.6 million years ago. Initial behavioral analysis indicated that Ardipithecus could be very similar to chimpanzees, however more recent analysis based on canine size and lack of canine sexual dimorphism indicates that Ardipithecus was characterised by reduced aggression, and that they more closely resemble bonobos.
Orrorin is an extinct genus of primate within Homininae from the Miocene Lukeino Formation and Pliocene Mabaget Formation, both of Kenya.
Gibbons are apes in the family Hylobatidae. The family historically contained one genus, but now is split into four extant genera and 20 species. Gibbons live in subtropical and tropical rainforests from eastern Bangladesh to Northeast India to southern China and Indonesia.
Apes are a clade of Old World simians native to sub-Saharan Africa and Southeast Asia, which together with its sister group Cercopithecidae form the catarrhine clade, cladistically making them monkeys. Apes do not have tails due to a mutation of the TBXT gene. In traditional and non-scientific use, the term ape can include tailless primates taxonomically considered Cercopithecidae, and is thus not equivalent to the scientific taxon Hominoidea. There are two extant branches of the superfamily Hominoidea: the gibbons, or lesser apes; and the hominids, or great apes.
Pierolapithecus catalaunicus is an extinct species of primate which lived around 12.5-13 million years ago during the Miocene in what is now Hostalets de Pierola, Catalonia, Spain. Some researchers believe that it is a candidate for common ancestor to the great ape clade, or is at least closer than any previous fossil discovery. Others suggest it being a pongine, or a dryopith. On 16 October 2023, scientists reported the facial reconstruction of the great ape.
Sivapithecus is a genus of extinct apes. Fossil remains of animals now assigned to this genus, dated from 12.2 million years old in the Miocene, have been found since the 19th century in the Siwalik Hills of the Indian subcontinent as well as in Kutch. Any one of the species in this genus may have been the ancestor to the modern orangutans.
Dryopithecus is a genus of extinct great apes from the middle–late Miocene boundary of Europe 12.5 to 11.1 million years ago (mya). Since its discovery in 1856, the genus has been subject to taxonomic turmoil, with numerous new species being described from single remains based on minute differences amongst each other, and the fragmentary nature of the holotype specimen makes differentiating remains difficult. There is currently only one uncontested species, the type species D. fontani, though there may be more. The genus is placed into the tribe Dryopithecini, which is either an offshoot of orangutans, African apes, or is its own separate branch.
Indopithecus giganteus is an extinct species of large ape that lived in the late Miocene of the Siwalik Hills in northern India. Although frequently assigned to the more well-known genus Gigantopithecus, recent authors consider it to be a distinct genus in its own right.
Nakalipithecus nakayamai, sometimes referred to as the Nakali ape, is an extinct species of great ape from Nakali, Kenya, from about 9.9–9.8 million years ago during the Late Miocene. It is known from a right jawbone with 3 molars and from 11 isolated teeth. The jawbone specimen is presumed female as the teeth are similar in size to those of female gorillas and orangutans. Compared to other great apes, the canines are short, the enamel is thin, and the molars are flatter. Nakalipithecus seems to have inhabited a sclerophyllous woodland environment.
Wushan Man is a set of fossilised remains of an extinct, undetermined non-hominin ape found in central China in 1985. The remains are dated to around 2 million years ago and were originally considered to represent a subspecies of Homo erectus.
Lufengpithecus is an extinct genus of ape, known from the Late Miocene of East Asia. It is known from thousands of dental remains and a few skulls and probably weighed about 50 kg (110 lb). It contains three species: L. lufengensis, L. hudienensis and L. keiyuanensis. Lufengpithecus lufengensis is from the Late Miocene found in China, named after the Lufeng site and dated around 6.2 Ma. Lufengpithecus is either thought to be the sister group to Ponginae, or the sister to the clade containing Ponginae and Homininae.
The Hominidae, whose members are known as the great apes or hominids, are a taxonomic family of primates that includes eight extant species in four genera: Pongo ; Gorilla ; Pan ; and Homo, of which only modern humans remain.
Solimoea acrensis is a prehistoric ateline monkey from the Late Miocene Solimões Formation of Brazil. It is the only known species of the genus Solimoea.
Saadanius is a genus of fossil primates dating to the Oligocene that is closely related to the common ancestor of the Old World monkeys and apes, collectively known as catarrhines. It is represented by a single species, Saadanius hijazensis, which is known only from a single partial skull tentatively dated between 29 and 28 million years ago. It was discovered in 2009 in western Saudi Arabia near Mecca and was first described in 2010 after comparison with both living and fossil catarrhines.
Anapithecus is a late Miocene primate known from fossil locations in Hungary and Austria. Many Anapithecus fossils come from the site of Rudabánya, in northern Hungary, where Anapithecus lived alongside the ape Rudapithecus. The only species in the genus, Anapithecus hernyaki, is named after Gabor Hernyák, chief geologist of the Iron Ore Works of Rudabánya.
The evolutionary history of the primates can be traced back 57-90 million years. One of the oldest known primate-like mammal species, Plesiadapis, came from North America; another, Archicebus, came from China. Other similar basal primates were widespread in Eurasia and Africa during the tropical conditions of the Paleocene and Eocene. Purgatorius is the genus of the four extinct species believed to be the earliest example of a primate or a proto-primate, a primatomorph precursor to the Plesiadapiformes, dating to as old as 66 million years ago.
Sivaladapis is a genus of adapiform primate that lived in Asia during the middle Miocene.
Pliopithecoidea is an extinct superfamily of catarrhine primates that inhabited Asia and Europe during the Miocene. Although they were once a widespread and diverse group of primates, the pliopithecoids have no living descendants.
Kapi is an extinct primate genus that lived in northern India about 13.8 to 12.5 million years ago during the Miocene. The only species, K. ramnagarensis, was described in 2020 and is known from a complete lower molar. The fossil was discovered in 2015 from Ramnagar, a town in Jammu and Kashmir, for which the species name was created. Though originally identified as member of the gibbons and popularised in the news as the oldest gibbon, it was later reassessed as those of pliopithecoid, a group of extinct Old World monkeys.
Micropithecus is an extinct genus of primates that lived in East Africa about 19 to 15 million years ago, during the early Miocene. The genus and its type species, Micropithecus clarki, were first scientifically described in 1978.