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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.
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Coelacanthidae is an extinct family of coelacanths found in freshwater and marine strata throughout the world, originating during the Permian, and finally dying out during the Jurassic. The modern-day genus Latimeria is often erroneously thought to be in this family, when, in fact, it is the type genus of the more advanced family Latimeriidae ...
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