Search results
Results From The WOW.Com Content Network
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 reverting completely 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 ...
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.
The medusae of most species are fast-growing, and mature within a few months then die soon after breeding, but the polyp stage, attached to the seabed, may be much more long-lived. Jellyfish have been in existence for at least 500 million years, [1] and possibly 700 million years or more, making them the oldest multi-organ animal group. [2]
Incredibly well-preserved fossils of the oldest swimming jellyfish, which lived 505 million years ago, were discovered at a famed fossil site in Canada. ... While fossilized polyps have been found ...
For premium support please call: 800-290-4726 more ways to reach us
Researchers found 182 fossils that were mainly unearthed during the late 1980s and 1990s under the supervision of Desmond Collins, the former Curator of Invertebrate Palaeontology in Royal Ontario Museum. [4] Burgessomedusa fossils are remarkably well conserved within the Burgess Shale, despite jellyfish being approximately 95% water. The Royal ...
Image credits: writerkyle #9. How old the Appalachian Mountains really are: They are older than trees, bones (including all dinosaurs), and the splitting of Pangaea -- so part of the mountain ...