Search results
29 cze 2022 · The five main groups of vertebrates are fish, amphibians, reptiles, birds, and mammals. There are actually more categories, since bony fish are separate from jawless fish (lampreys and hagfish), cartilaginous fish (sharks and rays), and lobe-fin fish (lungfish and coelacanths).
A fish (pl.: fish or fishes) is an aquatic, anamniotic, gill-bearing vertebrate animal with swimming fins and a hard skull, but lacking limbs with digits. Fish can be grouped into the more basal jawless fish and the more common jawed fish , the latter including all living cartilaginous and bony fish , as well as the extinct placoderms and ...
22 lis 2023 · Here is one classification system: Artiodactyla (Even-toed Ungulates): Animals with hooves that bear weight on two of the five toes – includes deer, pigs, camels, cows, and giraffes. Carnivora (Carnivores): Predominantly meat-eating mammals like cats, dogs, bears, seals, and otters.
The capybara [a] or greater capybara (Hydrochoerus hydrochaeris) is the largest living rodent, [2] native to South America.It is a member of the genus Hydrochoerus.The only other extant member is the lesser capybara (Hydrochoerus isthmius).Its close relatives include guinea pigs and rock cavies, and it is more distantly related to the agouti, the chinchilla, and the nutria.
13 kwi 2023 · The backbone, also known as the vertebral column, is an essential component of vertebrate anatomy – from fish to mammals. It is composed of a series of individual bones, called vertebrae, that are stacked in a column to form the backbone.
29 wrz 2024 · For example, the jawless fishes (Agnatha) have gills in pouches and lack limb girdles. Extant agnathans are the lampreys and the hagfishes. As the name implies, the skeletons of fishes of the class Chondrichthyes (from chondr, “cartilage,” and ichthyes, “fish”) are made entirely of cartilage.
Fish and mammals are two distinct groups of animals that have evolved differently over millions of years. While fish are aquatic creatures that breathe through gills and live in water, mammals are terrestrial or marine animals that breathe through lungs and give birth to live young.
