Talk:Radiata
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Proposed merger
editPlease see discussion at Talk:Eumetazoa
Metazoa to Eumetazoa
editMetazoa 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?
editI 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)