Cnidarians lack true mesoderm, in the sense of a third germ layer that arises as a direct result of gastrulation. However, at the molecular level, muscle development in the medusa of the hydrozoan ...

The recent Invertebrate Wars reminded me of spectacular, but often ignored, group of gastropods. The parasites! This is a group that I have totally geeked out on in the past. In my previous work I ...

One major division of the kingdom Animalia is Cnidarians (animals built around a central point) and bilaterians (animals with bilateral symmetry), which includes us humans. A new study found that the ...

A new study into the neurons found in the earliest-diverging animal lineages reveals key clues about the form of the most ancestral nervous system, and how neurons first evolved. Neurons, the ...

The spectacular diversity of coral reef cnidarians - corals, sea fans, sea anemones, soft corals and their relatives - is achieved without the involvement of a Hox cluster. Whereas in higher animals, ...

Researchers find that eyes originated in jellyfish at least eight separate times, helping to illuminate how evolution produces complex visual organs Eyes detect light and convert it into ...

The animal kingdom contains a vast array of animals capability of remarkable regenerative abilities, but known are quite as adept at this healing task than sea-swelling Cnidarians, such as hydra, ...

Left, a hydra stained in blue where the light-sensitive opsin gene is expressed. Right, two tentacle bulbs showing the arrangement of neurons and stinging cells (red), muscle fibers (green) and cell ...

Here’s what you’ll learn when you read this story: The animal kingdom contains a vast array of animals capability of remarkable regenerative abilities, but known are quite as adept at this healing ...