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From: todd@scirtp.UUCP (Todd Jones)
Newsgroups: net.bio
Subject: Re: Morphological Asymmetry
Message-ID: <462@scirtp.UUCP>
Date: Mon, 16-Sep-85 17:53:18 EDT
Article-I.D.: scirtp.462
Posted: Mon Sep 16 17:53:18 1985
Date-Received: Wed, 18-Sep-85 05:42:12 EDT
References: <295@ihnet.UUCP>
Distribution: net
Organization: SCI Systems, Research Triangle Park, NC
Lines: 13

> 
> 	What is the earliest animal (on the evolutionary scale)
> that exhibits morphological asymmetry against a backdrop of
> bilateral symmetry?
> A friend nominated a particular crab
> possessing one large claw, for fighting.

I may be totally off (if so, flame), but I recall that
Paramecia are basically asymmetrical except for their
gullet. Surely a creature such as this existed, in some
form, before the crustacean mentioned.

-todd jones


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