from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. hydras; polyps; jellyfishes; sea anemones; corals
Sorry, no etymologies found.
We may call these the coelenteria and coelomaria, the former are often also called zoophytes or coelenterata, and the latter bilaterals.
In the first are comprised the coelenterata (also called zoophytes, or plant-animals).
Leuckart, the founder of the coelenterata group (1848), has attributed
The ventral cavity, the original organ of nutrition in the multicellular animal-body, is the oldest and most important organ of all the metazoa, and, together with the primitive mouth, is formed in every case in the gastrula as the primitive gut; it is only at a much later stage that the body-cavity, which is entirely wanting in the coelenterata, is developed in some of the metazoa between the ventral and the body wall.
Hertwigs under the title of enterocoela, and were contrasted with the other groups of the pseudocoela (with false body-cavity) and the coelenterata (with no body-cavity).