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The coelacanth was long considered a "living fossil" because scientists thought it was the sole remaining member of a taxon otherwise known only from fossils, with no close relatives alive, [8] and that it evolved into roughly its current form approximately 400 million years ago. [1]
After spending 30 minutes out of water, the fish, still alive, was placed in a netted pool in front of a restaurant at the edge of the sea. It survived for 17 hours. Coelacanths usually live at depths of 200–1,000 metres. The fish was filmed by local authorities swimming in the metre-deep pool, then frozen after it died.
The coelacanths were thought to have gone extinct , until a living specimen belonging to the order was discovered in 1938.. A living fossil is a deprecated term for an extant taxon that phenotypically resembles related species known only from the fossil record.
The presence of Coccoderma in the Late Jurassic makes Laugiidae the latest surviving non-latimerioid coelacanth lineage; almost all other non-latimerioid coelacanths were extinct by the Carnian stage of the Late Triassic, leaving only the latimerioids (Latimeriidae and Mawsoniidae) as the dominant coelacanth groups.
Marjorie Eileen Doris Courtenay-Latimer (24 February 1907 – 17 May 2004) was a South African museum official, who in 1938, brought the existence of the coelacanth, a fish thought to have been extinct for 65 million years, to the attention of the world.
The heyday of the former was the Late Devonian and Carboniferous, from 385 to 299 Mya, as they were more common during those periods than in any other period in the Phanerozoic; coelacanths still live today in the oceans (genus Latimeria). The Rhipidistians, whose ancestors probably lived in estuaries, migrated into freshwater habitats.
If you’re still curious about distance, though, one 2023 study in the Journal of Physiological Anthropology found that, compared to people who didn’t hit 150 minutes of activity per week ...
The West Indian Ocean coelacanth [6] (Latimeria chalumnae) (sometimes known as gombessa, [2] [7] African coelacanth, [8] or simply coelacanth [9]) is a crossopterygian, [10] one of two extant species of coelacanth, a rare order of vertebrates more closely related to lungfish and tetrapods than to the common ray-finned fishes.