Largest organisms photosynthetic unicellular and multicellular protists that are related to land plants. The thallus of the unicellular mermaid's wineglass, "Acetabularia", can grow to several inches (perhaps 0.1 to 0.2 m) in length. The fronds of the similarly unicellular, and invasive "Caulerpa taxifolia" can grow up to a foot (0.3 m) long. A member of the order Cetacea, the blue whale ("Balaenoptera musculus"), is thought to be the largest animal ever to have lived. The maximum recorded weight was 190 metric tonnes for a specimen measuring , whereas longer ones, up to , have been recorded but not weighed. The African bush
Journey to the Center of the Earth Lyell's earlier ground-breaking work "Principles of Geology", published 1830–33). By that time geologists had abandoned a literal biblical account of Earth's development and it was generally thought that the end of the last glacial period marked the first appearance of humanity, but Lyell drew on new findings to put the origin of human beings much further back in the deep geological past. Lyell's book also influenced Louis Figuier's 1867 second edition of "La Terre avant le déluge" ("The Earth before the flood") which included dramatic illustrations of savage men and women wearing animal skins and wielding stone axes, in place