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
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