40 YEARS
Ctenophora elegans was created in 1818.
ctenophora
Ctenophora
The answer is Phylum Ctenophora.
The most basal group in the animal kingdom is said to be ctenophora. They live in marine waters and are commonly referred to as comb jellies.
ctenophora..can eat cnidariacytes in order to get the nemocytes
Ctenophores are known for their ability to disrupt marine ecosystems by consuming large amounts of zooplankton, leading to imbalances in food webs. Additionally, some species of ctenophores have been introduced to new habitats through ballast water discharge, where they can outcompete native species and disrupt local ecosystems.
A beroe is a small, oval transparent jellyfish, belonging to the order Ctenophora.
jelly fish,hydra and sea anemones
The two animal phyla that show radial symmetry are Cnidaria (such as jellyfish and sea anemones) and Echinodermata (such as starfish and sea urchins). Radial symmetry means that the body parts are arranged symmetrically around a central axis, like spokes on a wheel.
The term coelenterates is now out of date and has been replaced with two terms Cnidaria and Ctenophora. Animals covered by these terms are jellyfish sponges and coral like animals. So the water is where your most likely to find most of them.
Mertensia ovum is not in any class of vertebrate, it is a comb jelly in the phylum Ctenophora.