Zinjanthropus Male Skull Replica


Zinjanthropus Male Skull Replica measures 8.8 inches. Zinjanthropus Male Skull Replica is museum quality Polyurethane cast. Made in USA. Australopithecus boisei is the scientific name. 1.8 MYA adult cranium of Olduvai Gorge, Tanzania by Mary Leakey. Our precise skull can be used as a teaching tool, at an museum exhibit, as home decor, or office decor.

Zinjanthropus or Australopithecus boisei was an early hominin, described as the largest of the genus Paranthropus (robust australopithecines). It lived in Eastern Africa during the Pleistocene epoch from about 2.4 until about 1.4 million years ago.

Zinjanthropus or Australopithecus boisei was first discovered by anthropologist Mary Leakey on July 17, 1959, at Olduvai Gorge, Tanzania, the well-preserved cranium (nicknamed “Nutcracker Man”) was dated to 1.75 million years ago and had characteristics distinctive of the robust australopithecines.

The 1.75 Ma age estimate comes from potassium-argon dating of anortoclase crystals found in a  volcanic ash bed overlying the stratigraphic horizon where the skull was found. It was the deposition of the pyroclastic ash flow from a nearby volcanic eruption that buried the former owner of the skull at his living site and likely killed him.

Australopithecus boisei as the species was eventually categorized, using Robert Broom’s 1938 definition of its genus proved to be a treasure, especially when the anthropologists’ son Richard Leakey suggested it was the first hominin species to use stone tools.

Zinjanthropus or Australopithecus boisei had a skull highly specialized for heavy chewing and several traits seen in modern-day gorillas. The molar teeth were very large. The species is sometimes referred to as “Nutcracker Man” because it had the biggest, flattest cheek teeth and the thickest enamel of any known hominin. They had large chewing muscles attached to a pronounced sagittal crest. To accommodate their enormous cheek teeth Zinjanthropus or Australopithecus boisei had a wide face, although the front teeth were much smaller than in similar species.

Additional information

Weight 8 lbs
Dimensions 8.8 in
Zinjanthropus Facts

Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Primates
Suborder: Haplorhini
Infraorder: Simiiformes
Family: Hominidae
Subfamily: Homininae
Tribe: Hominini
Genus: †Paranthropus
Species: †P. boisei
Binomial name: †Paranthropus boisei
Conservation Status: Extinct


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