
Homo is the genus that emerged in the genus Australopithecus that encompasses the extant species Homo sapiens, plus several extinct species classified as either ancestral to or closely related to modern humans, most notably Homo erectus and Homo neanderthalensis. The genus emerged with the appearance of Homo habilis just over 2 million years ago. Homo, together with the genus Paranthropus, is probably sister to Australopithecus africanus, which itself had previously split from the lineage of Pan, the chimpanzees.

Homo antecessor is an archaic human species of the Lower Paleolithic, known to have been present in Western Europe between about 1.2 million and 0.8 million years ago (Mya). It was described in 1997 by Eudald Carbonell, Juan Luis Arsuaga and José María Bermúdez de Castro, who based on its "unique mix of modern and primitive traits" classified it as a previously unknown archaic human species.

Homo erectus is an extinct species of archaic human from the Pleistocene, with its earliest occurrence about 2 million years ago, and its specimens are among the first recognisable members of the genus Homo. H. erectus was the first human ancestor to spread throughout the Old World, having a distribution in Eurasia extending from the Iberian Peninsula to Java. African populations of H. erectus are likely to be the ancestors to several human species, such as H. heidelbergensis and H. antecessor, with the former generally considered to have been the ancestor to Neanderthals and Denisovans, and sometimes also modern humans. Asian populations of H. erectus may be ancestral to H. floresiensis and possibly to H. luzonensis. As a chronospecies, the time of the disappearance of H. erectus is a matter of contention. There are also several proposed subspecies with varying levels of recognition. The last known record of morphologically recognisable H. erectus are the Solo Man specimens from Java, around 117–108,000 years ago.

Homo ergaster is an extinct species or subspecies of archaic humans who lived in Africa in the Early Pleistocene. Whether H. ergaster constitutes a species of its own or should be subsumed into H. erectus is an ongoing and unresolved dispute within palaeoanthropology. Proponents of synonymisation typically designate H. ergaster as "African Homo erectus" or "Homo erectus ergaster". The name Homo ergaster roughly translates to "working man", a reference to the more advanced tools used by the species in comparison to those of their ancestors.

Homo floresiensis is a species of small archaic human that inhabited the island of Flores, Indonesia until the arrival of modern humans about 50,000 years ago.

Homo gautengensis is a species name proposed by anthropologist Darren Curnoe in 2010 for South African hominin fossils otherwise attributed to H. habilis, H. ergaster, or, in some cases, Australopithecus or Paranthropus. The fossils assigned to the species by Curnoe cover a vast temporal range, from about 1.8 million years ago to potentially as late as 0.8 million years ago, meaning that if the species is considered valid, H. gautengensis would be both one of the earliest and one of the longest lived species of Homo.

Homo habilis is a species of archaic human from the Early Pleistocene of East and South Africa about 2.3–1.65 million years ago (mya). Upon species description in 1964, H. habilis was highly contested, with many researchers recommending it be synonymised with Australopithecus africanus, the only other early hominin known at the time, but H. habilis received more recognition as time went on and more relevant discoveries were made. By the 1980s, H. habilis was proposed to have been a human ancestor, directly evolving into Homo erectus which directly led to modern humans. This viewpoint is now debated. Several specimens with insecure species identification were assigned to H. habilis, leading to arguments for splitting, namely into "H. rudolfensis" and "H. gautengensis" of which only the former has received wide support.

Homo luzonensis, also locally called ubag after a mythical caveman, is an extinct, possibly pygmy, species of archaic human from the Late Pleistocene of Luzon, the Philippines. Their remains, teeth and phalanges, are only known from Callao Cave in the northern part of the island dating to before 50,000 years ago. They were initially identified as belonging to modern humans in 2010, but in 2019, after the discovery of more specimens, they were placed into a new species based on the presence of a wide range of traits similar to modern humans as well as Australopithecus and early Homo.

Homo naledi is a species of archaic human discovered in the Rising Star Cave, Cradle of Humankind, South Africa dating to the Middle Pleistocene 335,000–236,000 years ago. The initial discovery comprises 1,550 specimens, representing 737 different elements, and at least 15 different individuals. Despite this exceptionally high number of specimens, their classification with other Homo remains unclear.

Homo rudolfensis is a species of archaic human from the Early Pleistocene of East Africa about 2 million years ago (mya). Because H. rudolfensis coexisted with several other hominins, it is debated what specimens can be confidently assigned to this species beyond the lectotype skull KNM-ER 1470 and other partial skull aspects. No bodily remains are definitively assigned to H. rudolfensis. Consequently, both its generic classification and validity are debated without any wide consensus, with some recommending the species to actually belong to the genus Australopithecus as A. rudolfensis or Kenyanthropus as K. rudolfensis, or that it is synonymous with the contemporaneous and anatomically similar H. habilis.

Peking Man is a group of fossil specimens of Homo erectus, dated from roughly 750,000 years ago, discovered in 1929–37 during excavations at Zhoukoudian near Beijing, China.

Penghu 1 is a fossil jaw (mandible) belonging to an extinct hominin species of the genus Homo from Taiwan which lived in the middle-late Pleistocene. The precise classification of the mandible is disputed, some arguing that it represents a new species, Homo tsaichangensis, whereas others believe it to be the fossil of a H. erectus, a archaic H. sapiens or possibly a Denisovan.

Homo rhodesiensis is the species name proposed by Arthur Smith Woodward (1921) to classify Kabwe 1, a Middle Stone Age fossil recovered from a cave at Broken Hill, or Kabwe, Northern Rhodesia.

Sinanthropus is an archaic genus in the scientific classification system to which the early hominid fossils of Peking man, Lantian Man, Nanjing Man, and Yuanmou Man were once assigned. All of them have now been reclassified as Homo erectus, and the genus Sinanthropus is disused. Beginning in the year 1928 to the year 1937, 14 fragmented skulls belonging to the hominids were found in various locations in China. Peking and Chou K’ou-tien are two notable places with fossils found. It has been noted by researchers that it is likely that the found fragmented skulls were brought to the cave after being severed from the bodies they belonged to. This is very likely, because most of the found pieces are teeth and jaws. Some skulls are missing large parts which indicates separation before they were fossilized, not the loss of pieces due to fossilization process.
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.