Pyrosomida

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Pyrosomida

tunicate order

Also known as: pyrosome

Learn about this topic in these articles:

annotated classification

In tunicate: Annotated classification
Order PyrosomidaZooids embedded in a tube open at one end.Order DoliolidaComplex alternation of generations between a solitary, asexually and sexually reproducing gonozooid and colonial, asexually reproducing oozooids; gill with several to many stigmata.Order Salpida
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characteristics

In tunicate: Size range and diversity of structure
The thaliaceans (pyrosomes, dolioloids, and salps) are also pelagic. Their structure suggests that they are ascidians modified in adaptation to conditions in open water. They have specialized modes of reproduction, sometimes with a complicated alteration of sexual and asexual phases. Pyrosomes form long, tubular colonies. Dolioloids and…
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