Freethought & Rationalism Archive

l-bow · 03-10-2002, 03:01 AM

From the August 1979 issue of _Natural_History_:

"New species arise, not by the slow and steady transformation of entire ancestral populations, but by the splitting off of small populations from an unaltered ancestral stock. The frequency and speed of such speciation is among the hottest topics in evolutionary theory today, but I think that most of my colleagues would advocate ranges of hundreds or thousands of years for the origin of most species by splitting. This may seem like a long time in the framework of our lives, but it is a geologic instant, usually represented in the fossil record by a single bedding plane, not a long stratigraphic sequence."

[ March 10, 2002: Message edited by: l-bow ]</p>

tronvillain · 03-10-2002, 10:22 AM

We should keep in mind that he is referring to the time frame for the origin of a species. It and the parent species will probably be virtually indistinguishable.

l-bow · 03-10-2002, 12:34 PM

hello.

l-bow · 03-10-2002, 01:01 PM

.

tronvillain · 03-10-2002, 01:04 PM

Uh, hello?

03-10-2002, 03:01 AM	#1
l-bow Regular Member Join Date: Jul 2001 Location: Hawaii Posts: 215	Interesting Gould quote From the August 1979 issue of _Natural_History_: "New species arise, not by the slow and steady transformation of entire ancestral populations, but by the splitting off of small populations from an unaltered ancestral stock. The frequency and speed of such speciation is among the hottest topics in evolutionary theory today, but I think that most of my colleagues would advocate ranges of hundreds or thousands of years for the origin of most species by splitting. This may seem like a long time in the framework of our lives, but it is a geologic instant, usually represented in the fossil record by a single bedding plane, not a long stratigraphic sequence." [ March 10, 2002: Message edited by: l-bow ]</p>

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03-10-2002, 10:22 AM	#2
tronvillain Veteran Member Join Date: Oct 2000 Location: Alberta, Canada Posts: 5,658	We should keep in mind that he is referring to the time frame for the origin of a species. It and the parent species will probably be virtually indistinguishable.

03-10-2002, 12:34 PM	#3
l-bow Regular Member Join Date: Jul 2001 Location: Hawaii Posts: 215	hello.

03-10-2002, 01:01 PM	#4
l-bow Regular Member Join Date: Jul 2001 Location: Hawaii Posts: 215	.

03-10-2002, 01:04 PM	#5
tronvillain Veteran Member Join Date: Oct 2000 Location: Alberta, Canada Posts: 5,658	Uh, hello?

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