Largest organisms one of the largest and oldest clonal colonies on Earth. Among animals, the largest species are all marine mammals, specifically whales. The blue whale is believed to be the largest animal to have ever lived. The largest land animal classification is also dominated by mammals, with the African bush elephant being the most massive of these. The largest single-stem tree by wood volume and mass is the giant sequoia ("Sequoiadendron giganteum"), native to Sierra Nevada and California; it typically grows to a height of and in diameter. Multiple-stem trees such as banyan can be enormous. Thimmamma Marrimanu in India spreads
Largest prehistoric animals largest-known frog ever was a yet unnamed species frog that was about . The largest-known diacectid, "Diadectes", was a heavily built animal, long, with thick vertebrae and ribs. The largest-known anthracosaur was "Anthracosaurus", a predator. It could reach up to in length. "Eogyrinus" commonly reached ; however, it was more lightly built. The largest-known temnospondyl amphibian is "Prionosuchus", which grew to lengths of . The largest-known of these was the long "Rhizodus". The largest-known bony fish of all time was the pachycormid, "Leedsichthys problematicus", at around long. Claims of larger individuals persist. The largest-known of ichthyodectiform fish was "Xiphactinus", which