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From: beth@sphinx.UChicago.UUCP (JB)
Newsgroups: net.bio,net.origins
Subject: Re: Bipedalism
Message-ID: <71@sphinx.UChicago.UUCP>
Date: Mon, 21-Apr-86 18:45:40 EST
Article-I.D.: sphinx.71
Posted: Mon Apr 21 18:45:40 1986
Date-Received: Wed, 23-Apr-86 21:20:13 EST
References: <487@bcsaic.UUCP> <1002@cybvax0.UUCP> <32@sphinx.UChicago.UUCP> <1109@psivax.UUCP>
Reply-To: beth@sphinx.UUCP (JB)
Distribution: net
Organization: U.of Chicago Computation Center, Operating Systems Group
Lines: 29
Xref: watmath net.bio:396 net.origins:3028

[If God had wanted us to go around naked, we'd have been BORN that way.]

In article <1109@psivax.UUCP> friesen@psivax.UUCP (Stanley Friesen) writes:
>In article <32@sphinx.UChicago.UUCP> Beth Christy  writes:
>>[]
>>
>>  Humans have no natural enemies and hence do not need
>>the speed advantage for survival.  I'm under the impression (although I
>>could, of course, be wrong) that there were no species which preyed on
>>the bipedal dinosaurs either (or if there were, escape was not the
>>dinosaurs' defense).
>>
>	Much of this is simply not true. Many herbivorous dinosaurs
>of the group known as Ornithopods are bipedal and lack any defense
>except running. Examples include such famous forms as Camptosaurus and
>Hypselophodon. And while modern Humans have no natural enemies, the
>earliest Hominids *did*, and they were already bipedal. Our current
>lack of predators is due to our success, not the other way around.

My mistake - sorry for the misinformation.  Just out of curiosity,
what creatures preyed on early Hominids, and how do we know?  Same
question(s) for Ornithopods.  (Sorry for my ignorance here - I'm
just a casual reader.)

-- 

--JB  ((Just) Beth Christy, U. of Chicago, ..!ihnp4!gargoyle!sphinx!beth)

  All we learn from history is that we don't learn anything from history.