WebThis category contains articles about taxa at the order level in the class Actinopterygii, the ray-finned fishes.. The ray-finned fishes contain most of the species of fish and these are … WebMay 14, 2024 · Structure of the Ray-Finned Fish Tree of Life. The concatenated alignment of 1,105 exons produced a data matrix with 555,288 bp (185,096 amino acids) for 303 …

The mechanics of active fin-shape control in ray-finned fishes

WebHere are the following questions with point totals: 1. Identify the root of the tree (2 points) 2. Identify the outgroup (2 points) 3. Identify the most recent common ancestor (MRCA) of ray-finned fish and lobe-finned fish (remember that coelacanth has wrist bones) (2 points) (We are technically lobe-finned fish!!) 4. WebJun 29, 2015 · Ray-finned fishes are a dominant and exceptionally diverse member of modern pelagic ecosystems; however, both the fossil record and molecular clocks suggest that the vast majority of living ray-finned fishes developed only recently, during the last 100 million years (1–3).It has been proposed that the explosion in actinoptygerian diversity in … how do i start a recycling business

Consider the phylogenetic tree. A phylogenetic tree is shown. The …

WebThe most diverse group of fish The ray-finned fishes (actinopterygians) are the largest group of living fishes and compose half of the living vertebrates. There are around 42 orders, 431 families and nearly 24,000 species. Almost all fish that you see belong to this class of fish. The most notable exceptions include lampreys, hagfish, lungfish, and coelocanths. Ray … WebCatfish are a diverse group of ray-finned fish that are named for their prominent barbels, which resemble a cat's whiskers. They range in size from the Mekong giant catfish from Southeast Asia with recorded sizes of up to 3.2 m and weight of 300 kg to a tiny parasitic species found in the Amazon Basin commonly called the candiru. WebMar 1, 2015 · Palaeontology. Ray‐finned fishes (Actinopterygii) constitute approximately half of all living vertebrate species. A stable hypothesis of relationships among major modern lineages has emerged over the past decade, supported by both anatomy and molecules. Diversity is unevenly partitioned across the actinopterygian tree, with most … how much mouthwash is safe to swallow