The Pseudocoelomate reference article from the English Wikipedia on 24-Jul-2004 (provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Pseudocoelomate

A pseudocoelomate is an animal like a roundworm or rotifer. These animals have a body cavity, but it is not completely lined with a mesoderm. The mesoderm is the middle layer of tissue and cells which composes body structures into muscles and systems. The lack of this structure causes pseudocoelomates to be classified separately from other animals classified as coelomates.

Modern molecular phylogenies have brought into question whether coelomates and pseudocoelomates are actually independent lineages.

Source:

• Biology Sixth Edition by Solomon, Berg and Martin ISBN 0-534-39175-3

This is the "Pseudocoelomate" reference article from the English Wikipedia. All text is available under the terms of the GNU Free Documentation License. See also our Disclaimer.