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Priapulida (priapulid worms, from Gr. πριάπος, priāpos 'Priapus' + Lat. -ul-, diminutive),
sometimes referred to as **** worms, is a
phylum of unsegmented...
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secondarily lost in
certain groups. An
unpaired ventral nerve cord,
present in
Priapulida and Nematoida,
appear to be the
ancestral condition,
making the paired...
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proposed on
morphological grounds to
unite three phyla: the Kinorhyncha, the
Priapulida and the Loricifera. The
three phyla have four
characters in
common — chitinous...
- pharynx") of a
possible new
species of Meiopriapulus, a
marine worm in the
Priapulida,
bears pharyngeal teeth.
Fossils of the
Yunnanozoon and
Haikouella possess...
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fossil findings hint that the last
common ancestor of both
arthropods and
Priapulida shared the same
specialized mouth apparatus: a
circular mouth with rings...
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digestive tract instead of
around it like in
other coelomate animals.
Priapulida appears to
belong to the
pseudocoelomate animals, but the possibility...
- (unranked)
Scalidophora (unranked)
Phylum Kinorhyncha Phylum Loricifera Phylum Priapulida Nematoida (unranked)
Phylum Nematoda Phylum Nematomorpha Panarthropoda...
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marine worms,
containing the
three modern taxa Echiura, Sipuncula, and
Priapulida. Also Sternaspis, the
first described genus in the
family Sternaspidae...
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Priapulids Genus Phylum class Locality of
Origin Notes Images Ancalagon Priapulida (?)
Archaeopriapulida Walcott Quarry An
extinct priapulid worm. This worm...
- to
priapulid worms, and is
adjacent to the
evolutionary branching of
Priapulida,
Nematoda and Arthropoda.[jargon]
Despite significant advances in uncovering...
