Coelomate animals or Coelomata (also known as eucoelomates – "true coelom") have a body cavity called a coelom with a complete lining called peritoneum derived from mesoderm (one of the three primary tissue layers).

What is the difference between coelom and Coelomate?

is that coelomate is (zoology) any animal possessing a fluid-filled cavity within which the digestive system is suspended while coelom is (zoology) a fluid-filled cavity within the body of an animal the digestive system is suspended within the cavity, which is lined by a tissue called the peritoneum.

Does Pseudocoelomate have a coelom?

Pseudocoelomate metazoans have a fluid-filled body cavity, the pseudocoelom, which, unlike a true coelom, does not have a cellular peritoneal lining.