Hi all,

The fact that there are just as many synapomorphies (13) that Terebellum
shares with strombids as it separates this genus from strombids gives food
for thought.
Unfortinately, the very important study by Dr. Simone had some important
omissions:
there were no representatives of Tibia and Varicospira, and very few
Indo-Pacific taxa were included.
So, we're not even half way in unravelling the exact relationships within
the Stromboideans.

Gijs

PS this is not meant as an attack on the work of Dr. Simone, in the
contrary.

----- Original Message -----
From: "Luiz Ricardo L. Simone" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Saturday, April 20, 2002 1:48 PM
Subject: RES: Terebellum


>         Dear Colleagues and stromboideans interested people
>         I studied 21 stromboidean species for my Ph. D. thesis (2
> struthiolariids, 3 aporrhaids, 3 xenophorids and 13 strombids) and
> performed a phylogeny based on detailed morphology.
>         Terebellum resulted as the first branch of Strombidae. It shares
> 13 synapomorphies with remainder strombids but it is separated from them
> by other 13 synapomorphies.
>         Another interesting result is the xenophorids located between
> the strombids (from which they chare 10 synapomorphies) and the
> representatives of remainder families. The formal taxon Aporrhaidae had
> resulted paraphyletic.
>         I am available for any additional information.
>         Best wishes,
>         Luiz
> ______________________
> Luiz Ricardo L. Simone
> Museu de Zoologia da Universidade de São Paulo
> Cx. Postal 42594
> 04299-970 São Paulo, SP, Brazil
> email: [log in to unmask] http://www.mz.usp.br/pesquisa/simone.htm
>
>
> -----Mensagem original-----
> De: Conchologists of America List [mailto:[log in to unmask]] Em
> nome de Wesley M. Thorsson
> Enviada em: sexta-feira, 19 de abril de 2002 15:32
> Para: [log in to unmask]
> Assunto: Terebellum
>
> David:
>
> If you look at a Terebellum animal, you would be convinced that it is a
> Strombid.  It has the same long eye stalk with a bulbus eye at the tip
> and a short tentacle branching off the eye stalk that you see in all
> Strombids.  Its motion is similar to other Strombids but more violent,
> amounting to swimming as you would note when reaching for one.
> --
>                      Aloha from Wesley M. Thorsson
> Editor of Internet Hawaiian Shell News, a monthly Internet Publication
>            122 Waialeale St, Honolulu, HI  96825-2020,  U.S.A
>        http://www.hits.net/~hsn/index.html   or
>         http://home.att.net/~w.thorsson/index.html
>