WebApr 9, 2024 · The structure of bones and cartilage that supports the body is known as the fish skeletal system. A fish is an aquatic and vertebrate animal. It has a well-developed skeleton system that helps in the formation of body structure. Even more basic is the skeleton of the Hagfish. Although the skeletons of sharks and rays are more complicated, …
The origin of tetrapods - Understanding Evolution
WebBatoidea is a superorder of cartilaginous fishes, commonly known as rays.They and their close relatives, the sharks, comprise the subclass Elasmobranchii.Rays are the largest … The classification of ray-finned fishes can be summarized as follows: Cladistia, which include bichirs and reedfish Actinopteri, which include: Chondrostei, which include Acipenseriformes (paddlefishes and sturgeons) Neopterygii, which... Chondrostei, which include Acipenseriformes (paddlefishes and ... See more Actinopterygii , members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs … See more In nearly all ray-finned fish, the sexes are separate, and in most species the females spawn eggs that are fertilized externally, typically with the … See more • Media related to Actinopterygii at Wikimedia Commons • Data related to Actinopterygii at Wikispecies See more Ray-finned fishes occur in many variant forms. The main features of typical ray-finned fish are shown in the adjacent diagram. The swim bladder is a more derived structure than the lung. Ray-finned fishes have many different types of scales; but all See more Actinopterygii is divided into the classes Cladistia and Actinopteri. The latter comprises the subclasses Chondrostei and Neopterygii. … See more camping lac orta
Fish - Wikipedia
WebActinopterygii, members of which are known as ray-finned fishes, is a class or subclass of the bony fishes. The ray-finned fishes are so called because they possess lepidotrichia or "fin rays", their fins being webs of skin … Webray, any of the cartilaginous fishes of the order Batoidei, related to sharks and placed with them in the class Chondrichthyes. The order includes 534 species. Rays are distinguished from sharks by a flattened, disklike body, … WebMay 14, 2024 · Ray-finned fishes have evolved over more than 400 million years to occupy aquatic environments worldwide, from deep ocean trenches to high mountain streams, … first youtube comment on a video