What if life didn’t require oxygen? For centuries, we've operated under the assumption that oxygen is an essential part of ...

They are actually stomatopods, predatory marine crustaceans that first emerged 400 million years ago and feed on mollusks, fish, cnidarians ... There are few other examples that the protective ...

For example, it would mean that ancient sponges ... Or maybe nervous systems evolved twice: once in the lineage containing cnidarians and bilaterians, and once in ctenophores.

Jellyfish belong to a group called Cnidaria, which also includes sea anemones and corals ... dohrnii may bend the rules to rejuvenate itself, but it can't always cheat death. For example, jellyfish, ...

An example of modeling gregarious feeding behavior on an uneven ... However, discussions on the affinities of Ediacaran cnidarians are severely limited because of the lack of information concerning ...

Cnidarians, which include jellyfish, corals and sea anemones, are the closest living relatives of animals with bilateral symmetry, such as humans and insects. Though creatures like sea anemones ...

It divides all of life into groups known as taxa, where a single taxon represents a particular way of dividing up nature – for example, a population of whales or a species of fish. Under the most ...

This important study advances our understanding of early Cambrian cnidarian paleoecology and suggests that the reconstructed ancestral feeding and respiration mechanisms predate jet-propelled swimming ...