Cetartiodactyla Essays

Typical whale-like traits apparently the earliest to appear where the webbed feet (turning into fins), whale-like teeth, shorter legs with big feet, and whale like hearing with ear bones (ear structure). All of the other traits like fins, snake-like seamless body, nostrils shifted back, hind legs reduced and eliminated, strong swimming tail with flukes form, and small neck and long head appeared to evolve much later, this is because the organisms have to adapt to the environment and ecosystem around

Whale is the common name for a widely distributed and diverse group of fully aquatic marine mammals. They are an informal grouping within the infraorder Cetacea, excluding dolphins and porpoises, so to zoologists the grouping is paraphyletic. The whales comprise the extant families Cetotheriidae (whose only living member is the pygmy right whale), Balaenopteridae (the rorquals), Balaenidae (right whales), Eschrichtiidae (the gray whale), Monodontidae (belugas and narwhals), Physeteridae (the sperm