Hello Everyone,

I've been lurking for a few days, and am enjoying the new worlds I'm
discovering here.  I'm not a collector YET, but...

I'm interested in the chambered nautilus.  Can  you help me distinguish
between:

(a) Belauensis
(b) Pompilius
(c)"the rare paper nautilus"
(d) the ammonite (an ancestor?)

And what do they pump through the chambers--gasses, water, sediment, all of
the above?

Thanks,

Ellen Moore
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