[Taxacom] Animalia or Metazoa?

Stephen Thorpe s.thorpe at auckland.ac.nz
Thu Jul 23 23:33:27 CDT 2009

"Ultra picky"! I just think that for a major publication (at least  
locally) to adopt a phylogenetic framework based on mere "hints of  
common ancestry" is a bit pointless. It is afterall primarily an  
inventory of biodiversity, so why bother trying to assemble phyla into  
any kind of phylogentic framework. Better to have just listed phyla  
alphabetically! Great book though - I hope everyone here purchases a  
copy (Hi Dennis! :)


PS: ...and I've seen some very amorphous sponges!

Quoting Geoff Read <gread at actrix.gen.nz>:

> Let's not be too ultra picky about a diagram attempting the impossible -
> the "animal kingdom" explained in a glance in about half an A4 page.
> Adjacent text on p.18 of the below-mentioned book clarifies:
> " ... sponges, nettle animals, comb jellies, and placozoans — are so
> distinct that each probably represents a branch unrelated to the others,
> but they are sometimes collectively referred to as Radiata, and there are
> some shared features that hint at common ancestry."
> And FWIW I've seen some very cylindrical sponges!
>>>> On 24/07/2009 at 3:03 p.m., Stephen Thorpe <s.thorpe at auckland.ac.nz>
> wrote:
>> Yes, Curtis, I'm also a tad confused about how sponges got into
>> Metazoa? Though I don't think they are paraphyletic. Maybe I just
>> haven't soaked up the recent literature on sponges! I'm also somewhat
>> surprised to see sponges turn up as part of a putative clade Radiata in:
>> Gordon, D.P. (ed.) 2009: New Zealand inventory of biodiversity. Volume
>> 1. Kingdom Animalia. Radiata, Lophotrochozoa, Deuterostomia.
>> Canterbury University Press, Christchurch, New Zealand.
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