Definition: The word "palaeobot" refers to a term used in botany that describes an organism that has evolved from an extinct plant or animal species. Palaeobot means "extinct", referring to the historical period when such organisms are thought to have existed, but whose exact meaning and characteristics have never been established. The word is derived from Latin "palae", which literally means "ancient" in Greek; "botomus", a Latin word meaning "stem," as in "the stem of an ancient plant". The term was used by English botanists to refer to an organism that had evolved from a plant or animal species. Some examples of palaeobot organisms include: - Pteridophytes, including angiosperms - Arachnids - Echinoderms Palaeobotologists continue to study the evolution and diversity of Palaeobot as well as explore how various types of palaeobot are related to other evolutionary relationships.