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Turritopsis dohrnii, also known as the immortal jellyfish, is a species of small, biologically immortal jellyfish [2] [3] found worldwide in temperate to tropic waters. It is one of the few known cases of animals capable of completely reverting to a sexually immature, colonial stage after having reached sexual maturity as a solitary individual.
There's evidence to suggest that the comb jellyfish was the first animal to appear on Earth some 700 million years ago. ‘Time-traveler’ jellyfish found to age backward in accidental discovery ...
A later study estimated Granddad to have been 109 years old at the time of his death. [11] Genetic testing was performed on Methuselah in 2023 to estimate her age by measuring DNA methylation from a sample of her fins. [10] The study estimated her to be between 92 and 101 years old at the time, far upwards of her previously estimated age of 84. [5]
Incredibly well-preserved fossils of the oldest swimming jellyfish, which lived 505 million years ago, were discovered at a famed fossil site in Canada.
One found in a Pleistocene squirrel burrow in the Duvanny Yar outcrop on the Kolyma River was believed to be about 32,000 years old, while the other, recovered in 2015 near the Alazeya River, was dated at approximately 30,000-40,000 years old. These nematodes were believed to be the oldest living multicellular organisms on Earth.
Like other types of jellyfish, the T. dohrnii goes through a two-part life cycle, living on the sea floor during an asexual phase, where its chief role is to stay alive during times of food scarcity.
Raymond Quarry in the Burgess Shale, where the fossils were found This research, which identifies Burgessomedusa , relies on ancient remains found in the Burgess Shale's Raymond Quarry. Researchers found 182 fossils that were mainly unearthed during the late 1980s and 1990s under the supervision of Desmond Collins , the former Curator of ...
Modern-day Wisconsin was once a shallow sea, home to coral reefs, giant jellyfish, pointy-shelled octopus relatives and other interesting creatures. Skip to main content. 24/7 Help. For premium ...