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Re: Time Line
From: Bob Myers <email@example.com>
> On Sep 7, 17:08, Stan Friesen wrote:
> } Subject: Re: Time Line
> > > > First rudists
> > An early group of corals, rather different than the living hexacorals.
> Um, no. The rudists were reef-building mollusks (clams). Not corals at
> all, but a similar niche (reef-builder).
Oops - I tend to get those early reef-building groups mixed up.
There are so many odd groups that made reefs in the distant past
I cannot seem to keep track of them.
> > > > First grazing echinoids
> > Echinoids are starfish, sea-lilies, sea-cucumbers, sea-urchins
> I suspect you're right that echinoderms were meant originally, though.
> "First grazing echinoderms" seems to make more sense than "first grazing
Well, the way it's worded *is* a little odd. Actually, it may
be technically correct as it stands - the echinoids being grazing
echioderms, it could simply be refering to the origin of
echinoids (in a redundant manner)!
But that *is* what got me confused.
The peace of God be with you.