Unearthed in Arctic Canada, Tiktaalik is a non-tetrapod member of Osteichthyes (bony fish), complete with scales and gills—but it has a triangular, flattened head and unusual, cleaver-shaped fins.

Unearthed in Arctic Canada by a team of researchers led by Neil Shubin, Edward Daeschler, and Farish Jenkins, Tiktaalik is technically a fish, complete with scales and gills — but it has the flattened head of a crocodile and unusual fins.

Apr 18, 2016 · Fish have fins and gills, but they don't have necks. That's partly because it would be difficult to swim quickly with a neck that wagged back and forth in the water. What's more, anything...

Fishes have a stiff, fixed neck it is strait forward and cannot move, that is how we know those aquatic creatures. The only exceptions known are the South American predator Rhaphiodon vulpinus, which can bent its neck slightly upwards to fetch its prey coming from below and the species of the African genus Polypterus, which can turn their front ...

May 27, 2024 · Like a fish, Tiktaalik possessed gills, scales, and fins. However, like a tetrapod, it also had rib bones, a mobile neck, and lungs. Additionally, it possessed unique “fishapod” features, such as fins with working wrist joints and half-fish, half-tetrapod ears.

Jul 20, 2022 · It was a fish that lived about 375 million years ago, when our ancestors were scaly creatures vaguely resembling giant eels, walking across mud flats with four limbs complete with elbows, knees,...

Jul 20, 2022 · Tiktaalik is an iconic fossil species of lobe-finned fish discovered by scientists in 2004, on Ellesmere Island in Nunavut, Arctic Canada. What set this extinct species apart was that, in addition to having typical fish characteristics like gills, scales and fins, it also had some features of tetrapods (four-legged vertebrates), like strong ...

Oct 20, 2023 · No, not all fish have necks. Some fish, like eels and lampreys, have elongated bodies without a distinct neck region. Other fish have a more defined neck, with a narrower region between the head and body.

Oct 12, 2023 · Do Any Fish Have Neck-Like Structures? The short answer to this question is no, fish do not have necks. However, they do have various structures that serve similar functions. The Development of Pectoral Fins and Their Resemblance to Necks. One structure in fish resembling a neck is the pectoral fins.

Shubin explains that careful planning was key to the discovery of Tiktaalik roseae, the 375 million year old fossil link between fish and land animals.