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Coelacanths (/ ˈ s iː l ə k æ n θ / ⓘ SEE-lə-kanth) (order Coelacanthiformes) are an ancient group of lobe-finned fish (Sarcopterygii) in the class Actinistia. [ 2 ] [ 3 ] As sarcopterygians, they are more closely related to lungfish and tetrapods (which includes amphibians , reptiles , birds and mammals ) than to ray-finned fish .
Latimeria. Latimeria is a rare genus of fish which contains the only living species of coelacanth. It includes two extant species: the West Indian Ocean coelacanth ( Latimeria chalumnae) and the Indonesian coelacanth ( Latimeria menadoensis ). They follow the oldest known living lineage of Sarcopterygii (lobe-finned fish and tetrapods ), which ...
Marjorie Eileen Doris Courtenay-Latimer (24 February 1907 – 17 May 2004) was a South African museum official, who in 1938, brought to the attention of the world the existence of the coelacanth, a fish thought to have been extinct for 65 million years. Marjorie Courtenay-Latimer discovered this coelacanth, formerly only seen in fossils ...
Dunkleosteus. Dunkleosteus is an extinct genus of large arthrodire ("jointed-neck") fish that existed during the Late Devonian period, about 382–358 million years ago. It was a pelagic fish inhabiting open waters, and one of the first apex predators of any ecosystem. [ 1]
The evolution of fish began about 530 million years ago during the Cambrian explosion. It was during this time that the early chordates developed the skull and the vertebral column, leading to the first craniates and vertebrates. The first fish lineages belong to the Agnatha, or jawless fish. Early examples include Haikouichthys.
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.
That’s exactly what researchers at the University of Manchester did with a 3,000-year-old, 7.2-foot-long crocodile corpse, kept at the Birmingham Museum and Art Gallery and known simply as 2005. ...
Mawsonia is an extinct genus of prehistoric coelacanth fish. It is amongst the largest of all coelacanths, with one quadrate specimen (DGM 1.048-P) possibly belonging to an individual measuring 5.3 metres (17.4 feet) in length. [ 2] It lived in freshwater and brackish environments from the late Jurassic to the mid- Cretaceous ( Tithonian to ...