sapiens cro-magnonensis, Homo sapiens grimaldiensis (Gregory, 1921), Homo drennani (Kleinschmidt, 1931), Homo galilensis (Joleaud, 1931) = Paleanthropus palestinus (McCown & Keith, 1932). Rightmire (1983) proposed Homo sapiens rhodesiensis. By the 1980s, the practice of dividing extant populations of Homo sapiens into subspecies declined. An early authority explicitly avoiding the division of H. sapiens into subspecies was Grzimeks Tierleben, published 1967–1972. A late example of an academic authority proposing that the human racial groups should be considered taxonomical subspecies is John Baker (1974). The trinomial nomenclature Homo sapiens sapiens became popular for "modern humans" in the context of Neanderthals being considered a subspecies of H. sapiens in the second half of the 20th century. Derived from the convention, widespread in the 1980s, of considering two subspecies, H. s. neanderthalensis and H. s. sapiens, the explicit claim that "H. s. sapiens is the only extant human subspecies" appears in the early 1990s. Since the 2000s, the extinct Homo sapiens idaltu (White et al., 2003) has gained wide recognition as a subspecies of Homo sapiens, but even in this case there is a dissenting view arguing that "the skulls may not be distinctive enough to warrant a new subspecies name". H. s. neanderthalensis and H. s. rhodesiensis continue to be considered separate species by some authorities, but the 2010s discovery of genetic evidence of archaic human admixture with modern humans has reopened the details of taxonomy of archaic humans. Homo erectus subspecies Homo erectus since its introduction in 1892 has been divided into numerous subspecies, many of them formerly considered individual species of Homo. None of these subspecies have universal consensus among paleontologists. Homo erectus erectus (Java Man) (1970s) Homo erectus yuanmouensis (Yuanmou Man) (Li et al., 1977) Homo erectus lantianensis (Lantian Man) (Woo Ju-Kang, 1964) Homo erectus nankinensis (Nanjing Man) (1993) Homo erectus pekinensis (Peking Man) (1970s) Homo erectus palaeojavanicus (Meganthropus) (Tyler, 2001) Homo erectus soloensis (Solo Man) (Oppenoorth, 1932) Homo erectus tautavelensis (Tautavel Man) (de Lumley and de Lumley, 1971) Homo erectus georgicus (1991) Homo erectus bilzingslebenensis (Vlček, 2002) See also Names for the human species Timeline of human evolution Footnotes References Taxonomy