Sentences with phrase «erectus about»

Ho.mo sapiens evolved from ho.mo erectus about 250,000 years ago.

Not exact matches

«It was originally thought that the skull belonged to Homo erectus until the deposits were more reliably radiocarbon dated to about 5,000 to 6,000 years.

A shell etched by Homo erectus is by far the oldest engraving ever found, challenging what we know about the origin of art and complex human thought

«I would really like to think a little more about whether this thing is Homo erectus or what our definition of Homo erectus is,» he says.

For over a century the low - browed Homo erectus has sparked scientific fascination about our origins — and not - so - scientific ramblings about the meaning of race.

This suggested to some that they had a more primitive gait and that the transition to fully modern walking didn't happen until our direct ancestor, Homo erectus, emerged about 1.9 million years ago.

The team says the date is too late for Asian H. erectus, which first migrated out of Africa about 1.8 million years ago.

For example, Aiello and her colleagues proposed that when our brains began to expand dramatically about 1.6 million years ago, our direct ancestor Homo erectus evolved a smaller gut that sucked up less energy (Science, 15 June 2007, p. 1560).

The first members of our genus that looked like us, H. erectus stood about as tall as modern humans, with brains that weighed around 900 grams.

Another is that a group of larger bodied hominins — H. erectus — reached the island of Flores about 1 million years ago only to shrink because of a lack of predators and scarce resources, a process called island dwarfing.

Fossil records indicate that H. erectus was present in Asia between about 1.8 million and 33,000 years ago, so there could have been an overlap with humans towards the end of its existence.

Given that the So'a hominins were already hobbit - sized 700,000 years ago, and that H. erectus didn't arrive on neighbouring islands until about 1.2 million years ago, the hominins would have had only a few 100,000 years to shrink perhaps 70 centimetres to just 1 metre tall, and shed about half their adult brain volume.

Spoor notes that the paucity of the fossil record means that many conjectures about Homo erectus remain unproven.

Translating the differences between gene sequences into a date for their divergence, the researchers conclude that the various forms of RRM2P4 last shared a common ancestor about two million years ago — around when H. erectus migrated from Africa into Asia.

Fossils suggest that H. erectus may have survived in Asia up until about 30,000 years ago, overlapping with modern humans by about 15,000 years.

But «the jury is still out» on whether cooking was responsible for the first dramatic burst of brain growth in our lineage, in H. erectus, Martin says, or whether our ancestors began cooking over a fire later, when the brain went through a second major growth spurt about 600,000 years ago.

Along with a larger brain — about two - thirds the size of ours — came a reduction in the size and projection of the face, including much smaller teeth and jaws than those of Paranthropus (H. erectus's contemporary in Africa) and loss of the skull crest.

Now he spends few years looking, you know, suffering malaria and all sorts of things but he eventually gathers a pretty reliable group of workmen and on Java about four years into this, they find a molar skullcap and a thigh bone of what we call today Homo erectus.

This was surprising, as H. erectus walked upright, was about the same size as us and made simple tools — all traits associated with being human, says Dean.

Two he does mention, Rhodesian Man and Saldanha, he claims are Homo erectus, in spite of the fact that their brains sizes of about 1280 and 1250 cc are above the maximum H. erectus brain size of 1225 cc, which is in turn well above the value of about 1100 cc that Goodman claims is the maximum H. erectus brain size.

Nevertheless, Stringer said that the discovery and dating of H. naledi «remind us that about 95 percent of the area of Africa is still essentially unexplored for its fossil human record, and its history even within the last 500,000 years may well be as complex as that of Eurasia with its 5 known kinds of humans — Homo erectus, heidelbergensis, neanderthalensis, Denisovans, and floresiensis.»

For example, the lowest point of Birdsell's line for Homo erectus is about 900cc, even though some H. erectus skulls are known with values smaller than that.

The Turkana Boy Homo erectus skeleton belonged to a tall young boy who would probably have grown to around 182 cm (6 feet) in height, but his estimated adult brain size was only 910 cm3, about the size of a 3 or 4 year old modern human child.

With its odd assortment of features, the creature still provokes debate about whether it is a dwarfed form of H. erectus or some more primitive lineage that made it all the way from Africa to southeast Asia and lived until as recently as 60,000 years ago.

As most of the adult cranial capacity is reached by age 10 or 11, it is likely that the adult ECV of WT 15000 would be no more than about 1000 - 1050cc, which is still well within the modern human range of about 800 - 2000cc.19 On the same page Jue points out that a brain capacity of 1400cc applies to the Vertesszöllos erectus specimen which is dated at around 350kya (kiloyears ago = thousands of years).

The earlier skull is typical erectus in its morphology, yet has a rounded occiput and a brain case of about 1390cc.

Peter Andrews discusses the Middle Pleistocene specimens from Java and China, and earlier Pleistocene forms ER 3733 and 3883 from Africa, and the later European and African forms such as Arago, Heidelberg and Broken Hill (Rhodesian Man).79 He claims the African specimens may represent different species or a separate lineage from Asian forms giving rise to separate populations of H. sapiens in the later Pleistocene - that is, Solo Man from Java may be directly ancestral to the controversial Kow Swamp and Cossack erectus / sapiens populations in Australia about 6,000 - 13,000 years ago.

Early members of our own genus, Homo erectus, and its near relative, Homo ergaster, arose in the same region about 2.5 million years ago.

Dawkins speculates about how a human - chimp hybrid or the discovery of a living Homo erectus would change the way we see the world.