WebRays is the common name for the order Rajiformes, which consists of rays and skates. However, there are rays in other orders as well, such as the electric ray (TORPEDO). Rajiformes /ˈrædʒɪfɔːrmiːz/ is one of the four orders in the superorder Batoidea, flattened cartilaginous fishes related to sharks. Rajiforms are distinguished by the presence of greatly enlarged pectoral fins, which reach as far forward as the sides of the head, with a generally flattened body. The undulatory pectoral … See more Rajoids typically have a dorsoventrally flattened body. The snout is slender and pointed and the wide mouth, often covered with a fleshy nasal flap, is on the underside of the head. The eyes and well-developed spiracles … See more Families Four extant and five extinct families of rajoid have been described: • Anacanthobatidae • Arhynchobatidae • Gurgesiellidae See more Species of the order Rajiformes are found throughout the world's oceans, from Arctic to Antarctic waters, and from shallow coastal shelves to open seas and abyssal regions. A few are … See more In most rajoids, water for breathing is taken in through the spiracles rather than through the mouth and exits through the gill slits. Most species swim by undulating their enlarged … See more

rays (rajiformes): a picture guide

WebThe three main orders of modern Selachii—the Carcharhiniformes (ground sharks) and Lamniformes (mackerel sharks) and Rajiformes (skates and rays)—appeared during the … WebMar 24, 2024 · Disclaimer: ITIS taxonomy is based on the latest scientific consensus available, and is provided as a general reference source for interested parties. However, it … citing code of ethics apa

Fish - Evolution of Chondrichthyes, Holocephali & Sarcopterygii

WebHere are some interesting facts about stingrays: Stingrays use their sense of smell to locate food. Sharks and stingrays belong to the same family. Sharks are the primary predators of stingrays. Unlike other fish, stingrays have a distinct appearance and swimming style. Stingrays give birth to live young instead of laying eggs. Web鳐鱼，属于软骨鱼纲鳐形目 Rajiformes和鲼形鱼目，是多种扁体软骨鱼的统称。分布于全世界大部分水区，从包括2亚目，共8科约49属315种。中国产6科8属28种。我国各地俗称不 … WebRajiformes on Wikimedia Commons. Wikimedia Commons Ruggiero MA, Gordon DP, Orrell TM, Bailly N, Bourgoin T, Brusca RC, et al. (2015) A Higher Level Classification of All Living … citing code of federal regulations bluebook