Encyclopedia > Trochozoa

  Article Content


The Trochozoa are a collection of several phyla of animals, including most notably the mollusks and annelids, as well as the smaller phyla Nemertea and Sipuncula. They are united by the common presence of trocophore larvae, which have two bands of cilia around the middle.

Originally, the arthropods were also considered to belong here as close relatives of the annelids, though no trocophores occur within the group. More recently this has been called into question, and RNA studies remove them to the Ecdysozoa, though they confirm the unity of the remaining Trochozoa. The lophophorates are often considered close relatives of the Trochozoa, and possibly the rotifers and their allies as well.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
List of intelligence agencies

... le Informazioni e la Sicurezza Militare[?] (SISMI) Japan Public Security Investigation Agency[?] (PSIA) Jordan General Intelligence Department[?] Korea, ...

This page was created in 25.1 ms