Question: How long ago did the the species associated with KNM ER 1805 live?

full_context: Document 1: Kamoya Kimeu: Kamoya Kimeu, (born 1940) is one of the world's most successful fossil collectors who, together with paleontologists Meave Leakey and Richard Leakey, is responsible for some of the most significant paleoanthropological discoveries. Kimeu found a "Homo habilis" skull known as KNM ER 1813, an almost complete "Homo erectus" skeleton named KNM-WT 15000 or Turkana Boy (also known as Nariokotome boy), and in 1964 the jaw of a "Paranthropus boisei" skull known as the Peninj Mandible. He has two fossil primates named after him: "Kamoyapithecus hamiltoni" and "Cercopithecoides kimeui".
Document 2: Homininae: Homininae is a subfamily of Hominidae. It includes two tribes, with their extant as well as extinct species: the Hominini tribe (with the genus "Homo" including modern humans, Australopithecina, comprising at least three extinct (or, fossil) genera and the genus "Pan" including chimpanzees and bonobos), and the Gorillini tribe (gorillas). It comprises all hominids that arose after orangutans (subfamily Ponginae) split from the line of great apes. The Homininae cladogram has three main branches, which lead to gorillas (through the tribe Gorillini), and to humans and chimpanzees via the tribe Hominini and subtribes Hominina and Panina (see the evolutionary tree below). There are two living species of Panina (chimpanzees and bonobos) and two living species of gorillas, but only one extant human species. Traces of hypothetical "Homo" species, including "Homo floresiensis" and "Homo denisova", have been found with dates as recent as 40,000 years ago. Organisms in this class are described as hominine or hominines (not to be confused with the terms hominins or hominini).
Document 3: KNM ER 1805: KNM ER 1805 is the catalog number given to several pieces of a fossilized skull of the species "Homo habilis". It was discovered in Koobi Fora, Kenya in 1974. The designation indicates specimen 1805, collected from the east shore of Lake Rudolf (now Lake Turkana) for the Kenya National Museums.
Document 4: Cro-Magnon: Cro-Magnon ( or ; ] ) is a common name that has been used to describe the first early modern humans (early "Homo sapiens sapiens") that lived in the European Upper Paleolithic. Current scientific literature prefers the term European early modern humans (EEMH), to the term Cro-Magnon, which has no formal taxonomic status, as it refers neither to a species or subspecies nor to an archaeological phase or culture. The earliest known remains of Cro-Magnon-like humans are radiocarbon dated to 43,000–45,000 years before present that have been discovered in Italy and Britain, with the remains found of those that reached the European Russian Arctic 40,000 years ago.
Document 5: WLH-50: Fossil WLH-50 is a partial cranium fossil that was discovered in 1982, in the Willandra Lakes Region of Australia and was reconstructed by Alan Thorne. Speculation surrounds the exact age of this fossil hominid and a debate concerning its ancestry in relation to other late Pleistocene hominids, as well as, Ngandong hominids due to their close resemblance to one another.
Document 6: Early hominids in Southeast Asia: The theory of out of Africa has predominated an entire floor of human evolution discussion for many decades. This is despite that fact that many evidences found in other parts of the world seem to suggest other thoughts and theories on how our ancestors might have migrated or ‘evolved’ outside Africa. Yet the recent aDNA and fossils evidence prove those possibilities are impossible or in questions The region of Southeast Asia is considered a possible place for the evidence of early hominid remains that could be found due to the pathway between Australia and mainland Southeast Asia that early hominid migration could occur. One of many evidences is of the early hominid found in central Java of Indonesia in the late 1800s by Eugene Dubois, and later in 1937 at Sangiran site by G.H.R. van Koenigswald. These skull and fossil materials are Homo Erectus or Dubois named "Pithecanthropus erectus," and "Meganthropus palaeojavanicus" by van Koenigswald. They were dated back to c. 1.88 and 1.66 Ma suggested by Swisher et al. from volcanic rocks dating method
Document 7: KNM ER 3733: KNM ER 3733 is a fossilized hominid cranium of the extinct hominid "Homo ergaster", which is interchangeably referred to as "Homo erectus". It was discovered in 1975 in Koobi Fora, Kenya, right next to Lake Turkana, by Bernard Ngeneo, a field worker for Richard Leakey. Its geographic location is not to be confused with that of KNM WT 15000, Turkana Boy, also known as Nariokotome Boy, who was also found near Lake Turkana nine years later in 1984.
Document 8: KNM ER 1813: KNM ER 1813 is a skull of the species "Homo habilis". It was discovered in Koobi Fora, Kenya by Kamoya Kimeu in 1973, and is estimated to be 1.9 million years old.
Document 9: KNM ER 992: KNM ER 992 is a old fossilized lower jaw discovered by Richard Leakey in 1971 at Lake Turkana, Kenya. The mandible was considered by C. Groves and V. Mazak to be the holotype specimen for "Homo ergaster".
Document 10: KNM ER 406: KNM ER 406 is an almost complete fossilized skull of the species "Paranthropus boisei". It was discovered in Koobi Fora, Kenya by Richard Leakey and H. Mutua in 1969.
Document 11: Hominid (novel): Hominid is a short novel by Austrian writer Klaus Ebner. Taking place millions of years ago, it is a fictional story of a band of extinct hominids who inhabit Central Africa. Referencing the seven days of biblical Creation, the novel takes place in seven days. As the protagonist Pitar leads his band to civilization, tension arises between the clan leader Costello and his rival Re. Over the course of the story, Pitar invents tools, discovers the use of fire, and falls in love with Maluma. The seventh day marks a turning point in the storyline, as the members of the band separate from one another.
Document 12: National Museums of Kenya: The National Museums of Kenya (NMK) is a state corporation that manages museums, sites and monuments in Kenya. It carries out heritage research, and has expertise in subjects ranging from palaeontology, ethnography and biodiversity research and conservation. Its headquarters and the National Museum (Nairobi National Museum) are located on Museum Hill, near Uhuru Highway between Central Business District and Westlands in Nairobi. The National Museum of Kenya was founded by the East Africa Natural History Society (E.A.N.H.S.) in 1910; the Society's main goal has always been to conduct an ongoing critical scientific examination of the natural attributes of the East African habitat. The museum houses collections, and temporary and permanent exhibits. Today the National Museum of Kenya manages over 22 regional museums, many sites, and monuments across the country.
Document 13: KNM ER 3883: KNM ER 3883 is the catalogue number of a fossilized skull (nearly complete cranium) of the species "Homo erectus". The fossil was discovered by Richard Leakey in 1976 in Koobi Fora, east of Lake Turkana (formerly lake Rudolf), Kenya.
Document 14: Lucy (Australopithecus): Lucy is the common name of AL 288-1, several hundred pieces of bone fossils representing 40 percent of the skeleton of a female of the hominin species "Australopithecus afarensis". In Ethiopia, the assembly is also known as Dinkinesh, which means "you are marvelous" in the Amharic language. Lucy was discovered in 1974 in Africa, near the village Hadar in the Awash Valley of the Afar Triangle in Ethiopia, by paleoanthropologist Donald Johanson of the Cleveland Museum of Natural History.
Document 15: Homo habilis: Homo habilis was a species of the tribe Hominini, during the Gelasian and early Calabrian stages of the Pleistocene geological epoch, which lived between roughly 2.1 and 1.5 million years ago.
ground_truth: 2.1 and 1.5 million years ago