Talk:Radiata
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Proposed merger
Please see discussion at Talk:Eumetazoa
Metazoa to Eumetazoa
Metazoa can be ambiguous, being either a synonym for Animalia, or a daughter taxon to Animalia, sister to Parazoa (the sponges). Eumetazoa is an unambigous term for the animals other than the sponges (and a few obscure oddities). Eumetazoa is conventionally divided into Radiata and Bilateria. -- Dalbury(Talk) 19:34, 8 January 2006 (UTC)
Nematostella vectensis as bilateral animal?
I know the sources cited state N. vectensis exhibits bilateral symmetry, but you sure can't tell that from the article at Starlet sea anemone. I think this is confusing for the reader. Does anyone know of a source that explains how this species exhibits bilateral symmetry? -- Donald Albury 18:41, 13 September 2007 (UTC)
- Niel Shubin explains it on page 113 of Your Inner Fish. It's called "directive symmetry." Zyxwv99 (talk) 22:04, 1 September 2015 (UTC)
Is there any reason to use 'homoplasy' rather than 'convergent evolution'? Homoplasy seems like a specialist term, certainly not a word that would be known to a member of the general public. DlronW (talk) 01:35, 4 December 2016 (UTC)