Coelacanths (order Coelacanthiformes) are an ancient group of lobe-finned fish (Sarcopterygii) in the class Actinistia. As sarcopterygians, they are more closely related to lungfish and tetrapods than to ray-finned fish. The West Indian Ocean coelacanth (Latimeria chalumnae) (sometimes known as gombessa, African coelacanth, or simply coelacanth is a crossopterygian, one of two extant species of coelacanth. The other extant species is the Indonesian coelacanth (L. menadoensis).
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