J. of Zool. Syst. & Evol. Res.
g.read at niwa.cri.nz
Mon Nov 6 17:26:30 EST 2000
Many thanks to Günter Purschke for his information earlier. And, for those
interested, here to round off is the Salvini-Plawen abstract also:
Salvini-Plawen, L. v. 2000. What is convergent / homoplastic in Pogonophora.
Journal of Zoological Systematics & Evolutionary Research 38(3):133-147.
Characters of Pogonophora, including Perviata (Frenulata and
Scleronlinida) and Vestimentifera, are critically analysed and the
characters re-evaluated with respect to their reliability in determining
relationships with Annelida-Polychaeta in general and with Oweniidae in
particular, as well as with Oligomera. In addition to several differentiations
which possibly express parallelisms, only a few characters reflect
trustworthy information based on the current state of knowledge. These,
however, still include 'sets' of both Annelida-Polychaeta features and
Oligomera features; despite the more recent trend to regard the
Pogonophora as annelids, no unequivocal preference can be given as to
which of these 'sets' is convergent / homoplastic. The intra-epithelial nevous
system without true cerebral ganglia, typical of Epineuralia as well as
Pogonophora and Oweniidae, is here considered to represent the
paedomorphic peripheral-epidermal larval system of Gastroneuralia in
contrast to the gangliated gastroneural adult system.
Geoff Read <g.read at niwa.cri.nz>
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