Vertebrate, any animal of the subphylum Vertebrata. They have backbones and are also characterized by a muscular system consisting primarily of bilaterally paired masses and a …

Fishes, amphibians, reptiles, birds, and mammals, including humans, are all vertebrates. Vertebrates share some basic characteristics. A hollow backbone and the cranium, or skull, …

The presence of a hollow, jointed backbone is the main feature that distinguishes vertebrates from invertebrates (animals that lack a backbone). The backbone is composed of specialized …

Vertebrates have an internal skeleton formed of cartilage, bone, or both. The skeleton consists of a backbone (vertebral column), which partly encloses a spinal cord; a skull, which encloses …

The body is divided into trunk and tail regions. Several groups of vertebrates inhabit planet Earth. Let’s take a tour of the five main vertebrate groups alive today: the fishes, amphibians, …

Mar 25, 2025 · Chordate, any member of the phylum Chordata, which includes the vertebrates, the most highly evolved animals, as well as two other subphyla—the tunicates and …

Mar 30, 2025 · amphibian, (class Amphibia), any member of the group of vertebrate animals characterized by their ability to exploit both aquatic and terrestrial habitats. The name …

Apr 1, 2025 · mammal, (class Mammalia), any member of the group of vertebrate animals in which the young are nourished with milk from special mammary glands of the mother. In …

Apr 7, 2025 · Integument, in biology, network of features that forms the covering of an organism. The integument delimits the body of the organism, separating it from the environment and …

Apr 8, 2025 · As members of the phylum Chordata, fish share certain features with other vertebrates. These features are gill slits at some point in the life cycle, a notochord, or skeletal …