WebMay 20, 2009 · Lepidotrichia is the dermal bone structures of the fin rays in fish fins. Fins are the most distinctive features of a fish, composed of bony spines protruding from the body with skin covering them and joining them together. WebJun 23, 2011 · There are five classes of vertebrates. The easiest way to determine what class a vertebrate belongs to is by looking at the body covering. Here is a list of the vertebrates' classes and the different body coverings. Fish -- scales. Amphibians -- smooth or bumpy skin. Reptiles -- scales. Birds -- feathers. Mammals -- fur and hair [source: New …
Scaled, armored or naked: How does the skin of fish evolve?
WebThe arapaima is one of the world’s largest freshwater fish—according to data cited by National Geographic, “these giants can reach 9 feet (2.75 meters) long and weigh up to … WebBody Coverings that Help Hide Animals Birds and mammals that hide among the bushes often have spotted skin. Their coats look like patches of sunlight in a forest. Many cats, such as leopards, jaguars, ocelots, and cheetahs, wait, camouflaged among the leaves, until their prey is within striking distance. portmanteau spiked soda crossword
Trophy Fish mounts by Lee
WebThe body form of a fish can give a quick assessment of the fish's way of life. Different shapes allow some fish to be fast or slow, bottom dwellers or live in the pelagic zone, … The vertebrate jaw probably originally evolved in the Silurian period and appeared in the Placoderm fish which further diversified in the Devonian. Jaws are thought to derive from the pharyngeal arches that support the gills in fish. The two most anterior of these arches are thought to have become the jaw itself (see hyomandibula) and the hyoid arch, which braces the jaw against the braincase and increases mechanical efficiency. While there is no fossil evidence directly to supp… WebMost fish are covered in a protective layer of slime (mucus). There are four types of fish scales. Placoid scales, also called dermal denticles, are similar to teeth in that they are made of dentin covered by enamel. They are typical of sharks and rays. Ganoid scales are flat, basal-looking scales that cover a fish body with little overlapping ... portmanteau of twist and fiddle