This is not necessarily called the record date in a company announcement. The phrase generally used will be something like ...will be paid on [payment date] to shareholders on the register at [record date]. â¢ The payment date.
Animals that have true coelom are called Eucoelomates such as phylum Annelida, Arthropoda, Mollusca, Echinodermata, Hemichordata and Chordata. The fluid filled body cavity is lined with peritoneum, which is derived by embryonic mesoderm, and separates the digestive tract and outer body cell wall.
The peritoneal cavity in our abdomen is one part of our coelom and there are similar spaces around our heart and lungs. However, the type of coelom (or even its existence) differs among groups of animals both in its structure and mode of development. There are three structural types of body plans related to the coelom.seudocoelomates, in which a body cavity exists in addition to alimentary canal, but it is lined by mesoderm only on the outer body wall side and not around the gut. Examples are round worms (Nemathelminthes) and some minor phyla grouped under Aschelminthes.