WebA sample of fish skeletons displayed at the Smithsonian Institution National Museum of Natural History in Washington, D.C. shows the diversity of fish skeletons, from a jawless hagfish (upper left), to a bat ray (bottom left), to a shark jaw (middle), to a flounder flat fish (upper right), to a bill fish and other ray finned fishes (lower right). WebThe Silurian Period. The Silurian (443.7 to 416.0 million years ago)* was a time when the Earth underwent considerable changes that had important repercussions for the environment and life within it. One result of these …

What is a Fish? manoa.hawaii.edu/ExploringOurFluidEarth

WebSynonyms: agnathan; jawless fish; jawless vertebrate. Hypernyms ("jawless fish" is a kind of...): aquatic vertebrate (animal living wholly or chiefly in or on water). Hyponyms (each … WebJun 8, 2024 · The clade Chondrichthyes consists of sharks, rays, and skates, together with sawfishes and a few dozen species of fishes called chimaeras, or “ghost,” sharks. Chondrichthyes are jawed fishes that possess paired fins and a skeleton made of cartilage. This clade arose approximately 370 million years ago in the early or middle Devonian. founders insurance claims number

Jawless Fish Definition & Meaning YourDictionary

WebNov 30, 2012 · The jawless fish include the lampreys and the hagfish. Jaws, fins, and stomachs are absent in the jawless fish. Features of the jawless fish include a … WebOsteichthyes (/ ˌ ɒ s t iː ˈ ɪ k θ i. iː z /), commonly referred to as the bony fish, is a diverse superclass of vertebrates that have skeletons primarily composed of bone tissue.They can be contrasted with the … WebJawless Fish definition: Any of various elongated marine and freshwater fishes lacking a jaw and paired appendages, sometimes thought to constitute the taxon Agnatha. The only extant jawless fishes are the hagfishes and the lampreys. foundersinsurance.com