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Human Tree Evolution Project
Transcript of Human Tree Evolution Project
-climate, continental drift tracking the path of ancient migrations by examining genetic markers in Y chromosomes
Each marker identifies a lineage of men and where that lineage originated from Definition of a Hominid a hominid is an "erect bipedal primate mammal" BY: Junnat, Rachel, and Taylor Ardipithecus Timeline of the Human On the right is a timeline of the human evolution, showing how humans evolved from our ancient ancestors: apes. Above is the earliest putative.
Scientists do not really know how this creature functions
The base of the skull suggests bipedalism Sahelanthropus Tchadensis Australopithecus Afarensis The animal above is the ancestor of multiple genus' including ours
Still, today, scientists do not know much about this species. Homo Habilis This species is said to be the first hominid to have made and used stone tools.
There is also not a lot known about this animal, but it closely resembles the Australopithesus. Homo Ergaster This hominid is the first species of hominids to leave Africa.
These animals caused the spread of species across the planet.
Scientists do not know what prompted this initial spread our of Africa. Competing Theories Homo Neanerthalensis This species was a big game hunter that ruled a lot of territory.
Scientists wonder if they could have inter-bread with Homo Sapiens.
One of the first fossils of these type of animals to be found. Homo Floresiensis It had a very, surprisingly small brain and body.
The ancestors of this Hominid have larger bodies and may be more Australopithecus-like. Out-of-Africa Multi-regional Homo Sapiens humans with modern traits left Africa from 50,000 to 60,000 years ago to settle the world This is us!
We are the only hominid to develop adept civilizations
One questions that is still up for debate is: Did Homo Sapiens have the capacity for symbolic thought at inception or did it arise later due to genetic mutation?...what do you think? modern characteristics evolved in archaic hominid populations in Asia and Europe. Interbreeding among all these groups (horizontal arrows below) ensured that they remained a single species. Yes...this is a mutated man who is a mix of Barack Obama and George W. Bush determine the approximate ages of the lineages by mapping out a family tree Genetics and the Migration Out of Africa - 4.4 million years old - oldest skeleton of our branch of the primate family tree
- fossils discovered in Ethiopia - Ardipithicus a.k.a Ardi - possibly the world's most famous early human ancestor
-3.2 million years old -was the first Australopithecus afarensis skeleton ever found Characteristics of a Hominid
-the ability to walk on two legs progression of the face and braincase Changing Body Shapes and Sizes By 6 million years ago-short bodies, long guts
By 1.9 million years ago-tall bodies, short guts
By 400,000 years ago-compact bodies, short guts adaption to hot climates- narrow body, long legs
adaption to cold climates- broad body, short legs Shrinking human guts
adaption to diverse climates and diets adapted to cold adapted to heat Increased brain size (modern humans)
Body size increase, stronger knees, curved spine, and hip support INCREASE OF BRAIN SIZE BIBLIOGRAPHY http://www.nytimes.com/2012/07/17/science/chris-stringer-on-the-origins-and-rise-of-modern-humans.html?pagewanted=all&_r=0
http://web.mesacc.edu/dept/d10/asb/origins/hominid_journey/oldowan.html Lucy reconstruction This timeline will take you through the story of the "Homo" and those before them. As you learn about the different species, see what common themes come up.
-Which names of species come up most in other species' blocks?
-Which species seem to be the most closely related?
-Which species are most like Homo Sapiens or humans today? THANK YOU FOR WATCHING ? ? ? ? ? First Tools Used by Early Hominids The first tools used by early hominids were crucial to the discovery path to modern humans. -the first stone tools were made 3.5-3 billion years ago
-they were used for a variety of purposes
-without the original development of tools, hominids would not have been able to develop into the adept creatures that they are today Lets start off with a little poem :)