Plant fossils, especially seeds and fruits, are found in abundance and have been collected from the London Clay for almost 300 years.[9] Some 350 named species of plant have been found, making the London Clay flora one of the world's most diverse for fossil seeds and fruits.[10] The flora includes plant types found today in tropical forests of Asia and demonstrates the much warmer climate of the Eocene epoch, with plants such as Nypa (Nipah palms) and other palms being frequently encountered.