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EvC Forum ⇒ Science Forums ⇒ Biological Evolution ⇒

evolutionary chain

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Author Topic:   evolutionary chain
DrJones*
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Posts: 2285
From: Edmonton, Alberta, Canada
Joined: 08-19-2004
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Message 181 of 204 (283704)
02-03-2006 6:46 PM 		Reply to: Message 180 by Christian
02-03-2006 6:43 PM

Re: horse evolution
the eohippus has 18 pairs of ribs, the mesohippus has 15 pairs of ribs, mirohippus has 19 pairs of ribs, modern horse is back to 18. (Prentis Hall Life Science 1991, page 500.) Going up and down with the rib count? Come on. thats not evolution.
Common mistake, thinking that evolution demands a "forward" progression ie: animals get bigger/stronger. There is nothing in evolutionary theory that would demand that the rib count increases or stays constant.
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If "elitist" just means "not the dumbest motherfucker in the room", I'll be an elitist!
*not an actual doctor
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 Message 180 by Christian, posted 02-03-2006 6:43 PM Christian has replied
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DrJones*
Member
Posts: 2285
From: Edmonton, Alberta, Canada
Joined: 08-19-2004
Member Rating: 7.4

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Message 195 of 204 (285050)
02-08-2006 6:01 PM 		Reply to: Message 192 by Christian
02-08-2006 5:20 PM

Re: horse evolution
And then for another one to evolve from the one with 15 which has 19? Seems like the rib count would either go up or down, not back and forth in great leaps like that.
Evolution does weird things. Not knowing much about horse anatomy I can't speculate on why the rib count would change. And check out arach's post #186 where he quotes a creationist source that says that modern horse breeds have differing rib counts.
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If "elitist" just means "not the dumbest motherfucker in the room", I'll be an elitist!
*not an actual doctor
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 Message 192 by Christian, posted 02-08-2006 5:20 PM Christian has not replied
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