How did the Earth look 4 million years ago?
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23-10-2012, 07:32 AM
RE: How did the Earth look 4 million years ago?
There were no individuals of the genus Homo until ~2Ma. There were Australopithicines though, the ancestor of the genus Homo.

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23-10-2012, 11:54 AM (This post was last modified: 23-10-2012 01:27 PM by Janus.)
RE: How did the Earth look 4 million years ago?
(23-10-2012 07:32 AM)TheBeardedDude Wrote:  There were no individuals of the genus Homo until ~2Ma. There were Australopithicines though, the ancestor of the genus Homo.

And then suddenly, 2 MYA, out of nowhere, homo/Adam popped up?

You're from Kansas, right?

Well, you confuse the timeline. That was 6,000 years ago. According to Kent Hovind.

FYI: Australopithecines were only one ancestor of homo. Homo had at least two. The other one was an evolution of ardipithecines – who left Africa 4/5 MYA and evolved in central Asia and went into a global diaspora (to end up in Georgia, Europe, Java, Malaysia, Peking) around 2,1 MYA. He also trekked back to Africa. There he hybridized with various australopithecines into homo erectus, the global explorer. Who eventually (by ± 500 KYA?) also reached the Americas! In Africa homo erectus evolved, via various species, into homo sapiens sapiens, who left Africa approx. 70 KYA. In Europe HE evolved into homo heidelbergensis first, and then homo neandertalensis before they went extinct approx. 30 KYA. And in Asia HE evolved into homo denisovan, who went extinct approx. 15 KYA.

Complicated, huh!
Kent's version is the one for the mentally challenged.
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23-10-2012, 12:24 PM (This post was last modified: 23-10-2012 12:28 PM by Vosur.)
RE: How did the Earth look 4 million years ago?
(23-10-2012 11:54 AM)Janus Wrote:  Well, you confuse the timeline. That was 6,000 years ago. According to Kent Hovind.
Don't get me started on that hypocrite who wasted two hours of my life with his elementary school knowledge about science, the scientific method and critical thinking. Ironically, he preaches about giving money to the poor instead of buying fancy stuff and how Jesus is more important than money and then he's the one getting sent to prison for tax fraud.

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23-10-2012, 12:36 PM
RE: How did the Earth look 4 million years ago?
(23-10-2012 11:54 AM)Janus Wrote:  
(23-10-2012 07:32 AM)TheBeardedDude Wrote:  There were no individuals of the genus Homo until ~2Ma. There were Australopithicines though, the ancestor of the genus Homo.

And then suddenly, 2 MYA, out of nowhere, homo/Adam popped up?

You're from Kansas, right?

Well, you confuse the timeline. That was 6,000 years ago. According to Kent Hovind.

There is a huge problem trying to apply taxonomy to extinct animals. Our taxonomy is designed to describe the current twigs on the bush of evolution. Using the system we have to delve down the branches really doesn't work. Not "doesn't work well", it's "doesn't fucking work".

There is no point where Australopithecine suddenly becomes Homo, or anything becomes anything else. Every generation is the same genus as its parent; only in retrospect can we look at cumulative change and say it is a new species/genus/etc.

We need an evolutionary taxonomic system and no one has done it yet that I know of.

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23-10-2012, 12:52 PM
RE: How did the Earth look 4 million years ago?
(23-10-2012 12:36 PM)Chas Wrote:  We need an evolutionary taxonomic system and no one has done it yet that I know of.

Because they can't: still far to many 'holes' in it.
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23-10-2012, 01:16 PM
RE: How did the Earth look 4 million years ago?
(23-10-2012 12:52 PM)Janus Wrote:  
(23-10-2012 12:36 PM)Chas Wrote:  We need an evolutionary taxonomic system and no one has done it yet that I know of.

Because they can't: still far to many 'holes' in it.

What holes? We have a very complete set of evolutionary relationships including dates. We have very good knowledge of the evolutionary tree - root, branch, and twig. All we need is a 3-dimensional naming convention instead of the 2-D one of current taxonomy.

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23-10-2012, 01:22 PM
RE: How did the Earth look 4 million years ago?
(23-10-2012 01:16 PM)Chas Wrote:  
(23-10-2012 12:52 PM)Janus Wrote:  Because they can't: still far to many 'holes' in it.

What holes?

E.g. the holes of ardipithecine evolution in central Asia, of homo floresiensis' evolution, of homo denisovan evolution, of homo erectus' evolution...
Want more holes?
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23-10-2012, 01:41 PM
RE: How did the Earth look 4 million years ago?
There is no fossil evidence for anything in the genus Homo at 4Ma and nothing for that genus until~2Ma. We could argue about what that means timing wise in the sense that they must have existed prior to 2Ma but how much longer than that is entirely up for debate. The point is that there multiple primate species related to humans at 4Ma but nothing we have assigned to the genus Homo.

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23-10-2012, 01:51 PM (This post was last modified: 23-10-2012 01:55 PM by Janus.)
RE: How did the Earth look 4 million years ago?
(23-10-2012 01:41 PM)TheBeardedDude Wrote:  There is no fossil evidence for anything in the genus Homo at 4Ma and nothing for that genus until~2Ma. We could argue about what that means timing wise in the sense that they must have existed prior to 2Ma but how much longer than that is entirely up for debate. The point is that there multiple primate species related to humans at 4Ma but nothing we have assigned to the genus Homo.

Yet more holes in our knowledge!
But that we don't know about them doesn't mean they didn't exist! Quite the contrary!
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23-10-2012, 01:56 PM
RE: How did the Earth look 4 million years ago?
Trying to make up stories about those you have no evidence for is tenuous at best.

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