[
US
/ˈsiɫəˌkænθ/
]
NOUN
- fish thought to have been extinct since the Cretaceous period but found in 1938 off the coast of Africa
How To Use coelacanth In A Sentence
- Lobefins today have dwindled to the lungfishes and the coelacanths ‘dwindled’ as ‘fish’, that is, but mightily expanded on land: we land vertebrates are aberrant lungfish. THE GREATEST SHOW ON EARTH
- The data set included sequences of genes from mammals, birds, amphibians, coelacanths, lungfishes, ray-finned fishes, and cartilaginous fishes.
- Tetrapods are part of a larger groups called Sarcopterygii, which also includes several groups of lobe-finned fish, such as lungfish and the coelacanth.
- The ray-fins include the thousands of familiar sport and commercial fishes, but of the lobe-fins, only eight species survive, six lungfishes and two coelacanths.
- A few modern fishes, including the coelacanth, the African bichir Polypterus, and three genera of lungfishes, retained lungs … In two major lineages of derived bony fishes - the chondrosteans and the teleosts -- lungs evolved to swim bladders by atrophy of vascular tissue to create a more or less empty sac and, in some cases, by loss of the connecting tube to the esophagus (called the trachea in humans and other creatures with lungs). Citizendium, the Citizens' Compendium - Recent changes [en]
- But in coelacanths, lungfishes and some primitive sharks, the transformation of notochord into a segmented bony vertebral column does not take place.
- Apparently, the coelacanth, lungfish, and tetrapod lineages diverged within such a short time interval that at this level of analysis, their relationships appear to be an irresolvable trichotomy.
- The coelacanths were a side group of crossopterygians who evolved along separate lines from the rhipidistians in the Devonian.
- Elsewhere, especially in some loans, c is soft before ae, oe in Latin caesura and Greek coelacanth, soft in French façade (often written without the cedilla, as facade), and generally hard in Celt/Celtic.
- Tetrapods are part of a larger groups called Sarcopterygii, which also includes several groups of lobe-finned fish, such as lungfish and the coelacanth.
