Skip to comments.Scientists Push Back the Clock on Early Human Finds
Posted on 12/03/2013 7:08:24 PM PST by SunkenCiv
New dating indicates... a well-known group of early Homo (early human) fossils discovered in previous investigations at Koobi Fora in the Turkana Basin of East Africa have an age range that is older than previously estimated.
Led by archaeologist Josephine C.A. Joordens of the Netherlands' Leiden University, the researchers combined magnetostratigraphy and strontium (Sr) isotope stratigraphy techniques to develop a new age constraint range for 15 selected hominin fossils found in deposits on the Karari Ridge of the Koobi Fora region in the eastern Turkana Basin (Kenya). Magnetostratigraphy measures the polarity of Earth's changing magnetic field at the time a stratum (layer) was deposited. Strontium isotope stratigraphy involves measuring the ratios of Strontium isotopes in sediments to determine relative ages between successively deposited sediments. The fossils included key specimens such as cranium KNM-ER 1470, partial face KNM-ER 62000 and mandibles KNM-ER 1482, KNM-ER 1801, and KNM-ER 1802, all well-known among scientists and scholars involved in human evolution research. The fossil KNM-ER 1470, for example, has been classified as belonging to the early human species Homo rudolfensis, discovered by Bernard Ngeneo in 1972 and considered a possible theoretical contender for being ancestral to the human line. It has been dated to about 1.9 million years BPE.
Now, however, the results of their tests and analyses show a new age-range constraint of between 1.945 ± 0.004 and 2.058 ± 0.034 Ma, making the fossil finds older than previously estimated, and providing a sharper, more specific age range for their deposit.
(Excerpt) Read more at popular-archaeology.com ...
Homo rudolfensis skull (KNM ER 1470) reconstruction displayed at Museum of Man, San Diego. Durova, Wikimedia Commons
I propose BGF...
Before Government Funding...
I remember this guy! We were at a Rolling Stones concert in Milwaukee.
Bogus report. World was created only 4000 years ago!
I believe they voted for Obama, too.
not homo sapien
MAY be related to our line (that also means may not be)
But let them keep guessing one day we will all know the truth
musta been some really lousy acid
Interesting. Thanks for posting.
Interesting. Thanks for posting.
I second that.
It was some of that stamp acid from the 70s. I didn’t actually have the stamps so me and this guy were licking the front top right of old envelopes. I did two days in the county pen.....for littering. Turns out “The Man” wants you to put those soggy envelopes in a garbage can instead of throwing them on the ground. It was police brutality. I got a paper cut.
i can only assume you still have both kidneys
Homo rudolfensis Did he have a very shiny nose?
It looks like someone broke a club over it.
I’m no forensic paleopathologist, or whatever, but look at the breaks in the facial bones and skull.
Since it’s not likely a gunshot wound, doesn’t it look like this poor schlub got poleaxed right across his noggin?
I’m anxiously awaiting the discovery of a two million year old pacemaker.
Nope. I lost one in a poker game in Schenectady. You’d think that three queens would be a winning hand, but the dealer had four queens.
No, 6016 years ago.
I’ve been tempted to poleaxe some Alabama fans, but I simmered down and left for a restaurant without a jukebox. ;’)
The deformations are probably just due to burial.
“In a few minutes there will be no doll. There can’t be. I’m sorry.”
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.