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Tiktaalik (/ t ɪ k ˈ t ɑː l ɪ k /; Inuktitut ᑎᒃᑖᓕᒃ) is a monospecific genus of extinct sarcopterygian (lobe-finned fish) from the Late Devonian Period, about 375 Mya (million years ago), having many features akin to those of tetrapods (four-legged animals). [1]
In Late Devonian vertebrate speciation, descendants of pelagic lobe-finned fish such as Eusthenopteron exhibited a sequence of adaptations: Panderichthys, suited to muddy shallows; Tiktaalik with limb-like fins that could take it onto land; early tetrapods in weed-filled swamps, such as Acanthostega, which had feet with eight digits, and Ichthyostega, which had limbs.
Tiktaalik is a genus of extinct sarcopterygian (lobe-finned fish) from the Late Devonian period, with many features akin to those of tetrapods (four-legged animals). [27] It is one of several lines of ancient sarcopterygians to develop adaptations to the oxygen-poor shallow water habitats of its time—adaptations that led to the evolution of ...
A report published by J.R. Harlan and E.B. Speaker (1969) in Iowa Fish and Fishing states that the fish weighed over 198 lb (90 kg). [18] The world record paddlefish caught on rod and reel weighed 144 lb (65 kg) and was 54.25 in (1.378 m) long. The fish was caught by Clinton Boldridge in a 5 acre pond in Atchison County, Kansas on 5 May 2004.
A new species of fish has been discovered in the Amazon: a piranha relative with humanlike teeth. The eye-catcher was named after a “Lord of the Rings” villain.
Robert F. Kennedy Jr.'s confirmation hearing on Wednesday to lead the Department of Health and Human Services saw senators question the environmental lawyer about his views on vaccines, abortion ...
The earliest elpistostegalians, combining fishlike and tetrapod-like characters, such as Tiktaalik, are sometimes called fishapods. Although historically Elpistostegalia (referred to as Panderichthyida) was considered an order of prehistoric lobe-finned fishes, it was cladistically redefined to include tetrapods. [7]
The U.S. Army says transgender individuals may no longer join the service. While other branches have not yet made similar posts announcing the change, it is expected across the military.