Animals with a backbone are called vertebrates. Animals without a backbone are called invertebrates. Vertebrates and invertebrates can be sorted into smaller groups. Vertebrates, for example ...

A look at the strongest, biggest, most numerous, and just weirdest dental situations on the planet.

uterine and smooth), from lower classes within the vertebrate phylum (amphibian, fish and cyclostome) and from representatives of different invertebrate phyla (arthropod, mollusc, echinoderm ...

Vertebrates are animals that have a backbone inside their body. The major groups include fish, amphibians, reptiles, birds and mammals. Invertebrates don't have a backbone. They either have a soft ...

Animals are classified in a variety of ways. Basically, they are divided by being vertebrates (most having a backbone) and ...

But not all scientists agree that invertebrates feel anything analogous to vertebrate—much less human—emotion. Frans de Waal, a primatologist and animal behaviorist at Emory University, and Kristin ...

With over 20 quintillion animals on planet Earth, there is always something new to learn about and explore. Let's start with ...

Figure 2: Relationships among animal phyla and subphyla with ... and function of immune cells in jawless vertebrates and closely related invertebrates have elucidated, and continue to elucidate ...

Within the paleontology section are two divisions, Vertebrate Paleontology and Invertebrate Paleontology (which includes fossil plants). Invertebrate Paleontology now has over 300,000 cataloged fossil ...

"Retrotransposons compose about 40% of our genomes, but nothing is known about how they might have helped animals ... of ...