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~ These are the current taxonomic hierarchies for the various
Phyla that make up the pedagological group known
as the Pseudocoelomates as outlined in Brusca & Brusca (Rotifera, pg.
336; Gastrotricha, pg. 344; Kinorhyncha, pg. 347; Nematoda, pgs. 349-350;
Nematomorpha, pg. 360; Acanthacephala, pg. 366), and presented in your lab
manual. You are responsible for
knowing only those taxonomic ranks that are highlighted,and the specimens
presented in laboratory representative of each of those ranks.
 Phylum Rotifera
- Class Seisonidea
- Class Bdelloidea
- Class Monogonota
Phylum Gastrotricha
- Order Macrodasyida
- Order Chaetonotida
Phylum Kinorhyncha
- Class Cyclorhagida
- Class Homalorhagida
Phylum Nematoda (=Nemata)
- Class Adenophorea (=Aphasmida)
- Class Secernentea (=Phasmida)
Phylum Nematomorpha
- Class Gordioidea
- Class Nectonematoidea
Phylum Acanthocephala
- Order Archiacanthocephala
- Order Palaeacanthocephala
- Order Eoacanthocephala
~ Here are links to other sites with further taxonomic
information about various pseudocoelomate groups, or alternate hierachies
of those groups.
"Tree of Life", David R. and
Wayne P. Maddison
Illinois Natural History Survey Reports, Nov/Dec 1996
Checklist of the Invertebrates, Robert B. Hole, Jr.
Taxonomic Hierarchies,
Zoological Record
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