Australopithecus afarensis

E555611

Australopithecus afarensis is an early bipedal hominin species from eastern Africa, best known from the famous "Lucy" fossil and considered a key ancestor in human evolution.

All labels observed (1)

Label Occurrences
Australopithecus afarensis canonical 9

How this entity was disambiguated

Statements (79)

Predicate Object
instanceOf Australopithecus
hominin species
authority Johanson and White
binomialName Australopithecus afarensis
bodySize small-bodied compared to modern humans
brainSize approximately 375–550 cubic centimeters
class Mammalia
continent Africa
cranialFeature low forehead
prognathic face
culture no clear evidence of symbolic behavior
dentition reduced canine size compared to apes
thick molar enamel
diet included fruits
included leaves
included possibly seeds and nuts
mainly plant-based
DikikaChild catalogNumber DIK-1-1
juvenile specimen
discoveredBy Donald Johanson
Maurice Taieb
Yves Coppens
environment mosaic habitats
open grasslands
woodlands
extinctionStatus extinct
family Hominidae
femurFeature valgus knee indicative of bipedal gait
firstAppearance about 3.9 million years ago
FirstFamily catalogNumber AL 333
group of multiple individuals
footFeature arched foot
non-divergent big toe
fossilRange approximately 3.9–2.9 million years ago
fossilSite Belohdelie, Ethiopia
linked to: Hadar, Ethiopia

Dikika, Ethiopia
linked to: Hadar, Ethiopia

Korsi Dora, Ethiopia
Laetoli, Tanzania
genus Australopithecus
geologicalTimeRange Pliocene
importance central to debates on human ancestry
key taxon for understanding human bipedal evolution
infraorder Simiiformes
kingdom Animalia
LaetoliFootprints associated with bipedal trackways
dated to about 3.6 million years ago
languageAbility no evidence of complex language
lastAppearance about 2.9 million years ago
locomotion arboreal climbing ability
habitual bipedalism
Lucy catalogNumber AL 288-1
discovered 1974
discovered at Hadar, Ethiopia
LucyDiscoverer Donald Johanson
nameEtymology afarensis refers to the Afar region of Ethiopia
notableSpecimen Dikika child
First Family
Lucy
order Primates
parvorder Catarrhini
pelvisFeature short broad ilium adapted for bipedalism
phylogeneticRole early member of the human lineage
likely ancestor of later Homo species
phylum Chordata
posture upright
primaryFossilLocality Hadar, Ethiopia
recognizedBy paleoanthropologists worldwide
region East Africa
relatedTo Australopithecus africanus
Homo erectus
Homo habilis
sexualDimorphism pronounced
subfamily Homininae
suborder Haplorhini
superfamily Hominoidea
taxonRank species
toolUse no definitive stone tools known
possible simple tool use inferred from anatomy
yearDescribed 1978

How these facts were elicited

Referenced by (9)

Full triples — surface form annotated when it differs from this entity's canonical label.

Australopithecus africanus relatedTo Australopithecus afarensis
Lucy (Australopithecus afarensis cast) representsSpecies Australopithecus afarensis
Lucy (Australopithecus afarensis cast) representsTaxon Australopithecus afarensis
Australopithecus afarensis binomialName Australopithecus afarensis
Paranthropus aethiopicus coexistedWith Australopithecus afarensis
Australopithecina includesTaxon Australopithecus afarensis
AL 288-1 taxon Australopithecus afarensis
AL 288-1 taxon Australopithecus afarensis
subject linked to: AL 288-1 fossil remains
AL 288-1 holotypeOf Australopithecus afarensis
subject linked to: AL 288-1 fossil remains