Wikipedia maintains a list of noteworthy trees. This includes the widest tree, the tallest tree, some very isolated trees, trees of religious significance, trees of cultural significance, and some quirky ones. It also includes trees that are no longer standing, such as Prometheus. In studying trees, a graduate student cut down the tree (later nicknamed Prometheus) in 1963, only to discover it was around 5,000 year old, which made it the oldest known non-clonal organism at the time. Since the felling, a new record holder was found in 2012: a bristlecone pine in California dated to 5,067 years (as of 2017) meaning it started growing in 3,050 BC, during the early Dynastic Period of Egypt. This tree's lifetime encapsulates effectively all of human civilization as defined by language and dynasties.
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