WebThe vertebrate has a distinct head, with a differentiated brain and three pairs of sense organs (nasal, optic, and otic [hearing]). 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, reptiles, birds, and ... WebMar 31, 2024 · fish, any of approximately 34,000 species of vertebrate animals (phylum Chordata) found in the fresh and salt waters of the world. Living species range from the primitive jawless lampreys and hagfishes through the cartilaginous sharks, skates, and … Class Actinopterygii (ray-finned fishes), in existence since the Early Devonian, is … Fish are a kind of animal that lives in water. Fish have lived on Earth for more than … lungfish, (subclass Dipnoi), any member of a group of six species of living air … bony fish, (superclass Osteichthyes), any member of the superclass Osteichthyes, … mosquito, (family Culicidae), any of approximately 3,500 species of familiar … Ken Hammond/U.S. Department of Agriculture. The word fish is often used … The whale shark (Rhincodon typus) and the basking shark (Cetorhinus maximus), … reptile, any member of the class Reptilia, the group of air-breathing vertebrates … amphibian, (class Amphibia), any member of the group of vertebrate animals … skate, (order Rajiformes), in zoology, any of numerous flat-bodied cartilaginous …
How Sea Animals Keep Salt Out of Their System AMNH
WebMar 26, 2024 · Over millions of years, several very different groups of animals arrived at the same perfect solution, including fish, mammals and even reptiles. This is a great example of convergent evolution. Sharks … WebMammals are not known for laying eggs, only a few mammal species are exceptions to this rule. Fish also breathe through their gills, unlike mammals who have lungs. Is a pufferfish considered to be a mammal? … onshiftlcs
Are Sharks Mammals or Fish? (And Other Shark …
WebFish are aquatic, craniate, gill -bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as … WebOct 8, 2024 · As non-mammals, sharks are classified as a type of very large fish. And, as mentioned, are under the subclass of Elasmobranchii fish. There are specific factors which would indicate that sharks do in fact qualify as fish, rather than mammals. One of these indicators is the fact that sharks have the distinctive vertical tail orientation. WebJul 2, 2011 · Fish vs Mammals. – Being vertebrates, both fish and mammals are highly evolved taxonomic groups. – The number of fish species is comparatively higher to … onshift1973