One of the mysteries of the English language finally explained.
A large, bony marine fish with a three-lobed tail fin and fleshy pectoral fins. It is thought to be related to the ancestors of land vertebrates and was known only from fossils until one was found alive in 1938; since then others have been found near the Comoro Islands in the Indian Ocean and off Sulawesi, Indonesia.
Latimeria chalumnae, family Latimeriidae (or Coelacanthidae), subclass Crossopterygii
- ‘In most fossil coelacanths, the swimbladder appears to be ossified and, consequently, these fishes were probably confined to shallow water.’
- ‘They were hit hard by the terminal Devonian extinction event, and most marine forms died out then, only the coelacanths continuing.’
- ‘Fossil coelacanth were found only a few years ago in a shale-bed near Grahamstown, relics of a silent world which existed before birds or mammals, seed-bearing or flowering plants.’
- ‘Tetrapods are part of a larger groups called Sarcopterygii, which also includes several groups of lobe-finned fish, such as lungfish and the coelacanth.’
- ‘Little changed over the past 500 million years, the chambered nautilus is considered a ‘living fossil’, like the horseshoe crab and the coelacanth.’
Mid 19th century: from modern Latin Coelacanthus (genus name), from Greek koilos ‘hollow’ + akantha ‘spine’ (its fins have hollow spines).
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