The biological
systematics and taxonomy of invertebrates as proposed by Richard C. Brusca and Gary J. Brusca in 2003 is a system of
classification of
invertebrates, as a way to classify animals without backbones.[1]
Several groups traditionally viewed as having a blastocoelomate condition are viewed here as acoelomates (e.g.,
Gastrotricha,
Entoprocta,
Gnathostomulida).
Some of the coelomates groups (e.g.,
Arthropoda,
Mollusca) have greatly reduced celomic spaces; often the main body cavity is a bloodfilled space called a hemocoel, and is associated with an open circulatory system.
The biological
systematics and taxonomy of invertebrates as proposed by Richard C. Brusca and Gary J. Brusca in 2003 is a system of
classification of
invertebrates, as a way to classify animals without backbones.[1]
Several groups traditionally viewed as having a blastocoelomate condition are viewed here as acoelomates (e.g.,
Gastrotricha,
Entoprocta,
Gnathostomulida).
Some of the coelomates groups (e.g.,
Arthropoda,
Mollusca) have greatly reduced celomic spaces; often the main body cavity is a bloodfilled space called a hemocoel, and is associated with an open circulatory system.