Rouse, Greg W. 2001. A cladistic analysis of Siboglinidae Caullery, 1914
(Polychaeta, Annelida): formerly the phyla Pogonophora and Vestimentifera.
- Zoological Journal of the Linnean Society of London 132(1):55-80.
ABSTRACT:
"It has been proposed in recent years that the phyla Pogonophora and
Vestimentifera are a derived clade of polychaete annelids. It has also
been proposed that if this clade belongs among polychaetes, then the
taxon name Pogonophora is misleading and should revert to a name
first formulated for the group, Siboglinidae Caullery, 1914. This
recommendation is adopted in this paper, and a cladistic study using
terminals of «generic» rank in the former Pogonophora (including
Vestimentifera) is undertaken. The purpose of this is to assess which
taxon names should now be used for clades within Siboglinidae, and
to provide a revised taxonomy, based on phylogenetic principles.
Another major aim is to assess the position of the vestimentiferan
clade within Siboglinidae. The results show that Vestimentifera is
the sister group to Sclerolinum, and this clade is then sister group to
Frenulata, i.e. the remaining Siboglinidae. The results suggest that all
taxa within Siboglinidae that are not genera or species are redundant,
except for the following: Siboglinidae is defined as the first
polychaete, and all its descendants, to have an gut occluded by
expanded endoderm filled with chemoautotrophic bacteria, as seen in
the holotype of Riftia pachyptila Jones, 1981. Monilifera can be
defined based on apomorphy-based system such that it is the first
siboglinid, and all its descendants, to have rings of chaetae (uncini)
in the opisthosoma, as seen in the holotype of Sclerolinum
magdalenae Southward, 1972. Vestimentifera can be defined as the
first siboglinid and all its descendants to have a vestimentum as seen
in the holotype of Riftia pachyptia. Frenulata is defined as the
siboglinid, and all its descendants, to have a mid-trunk girdle, as
seen in the holotype of Siboglinum weberi Caullery, 1914. The taxa
of generic rank are not defined here since their monophyly was not
investigated."
http://www.idealibrary.com/links/toc/zjls/latest
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Geoff Read <g.read at niwa.cri.nz>
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