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Coelacanth. Coelacanths (/ ˈsiːləkænθ / ⓘ 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.
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 ...
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 ...
This April 5, 2012 file photo, shows U.S. Fish and Wildlife Service biologists Adam Kaeser, left, and Frank Parauka weighing a Gulf sturgeon on the Blackwater River near Milton as part of a study ...
September 4, 2024 at 3:12 AM. Fossils predating the dinosaurs by hundreds of millions of years have been found in a paving stone in a Scottish city centre. Thousands of people have walked over the ...
The pallid sturgeon is an ancient fish native to the Missouri and Mississippi Rivers. The fish was listed as an endangered species in the 1990s. Meet the ancient fish nicknamed 'Living Dinosaur'
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 reservoir's decline may soon make things worse, enabling these introduced fish to get past the dam to where the biggest groups of chub remain, farther downstream in the Grand Canyon.