Word: tiktaalik
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Dates: during 2006-2006
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...Bhutan volunteered to give up absolute power as monarch, he said, "The country is more important than the King." And prospects for political stability would increase if the army submitted to the supreme authority of parliament. Vinod C. Dixit Ahmedabad, India Up from the Ooze Scientists are hailing Tiktaalik Roseae, or the fossil "fishapod," as evidence of evolution [April 17]. Yet in the same article, they admit that the elongated fin of the fishapod would have been "worse than useless" on land and that the appendage is only "anatomically" - and not functionally - intermediate between lobed fins and legs. If some...
Scientists are hailing Tiktaalik roseae, or the fossil "fishapod," as evidence of evolution [April 17]. Yet in the same article, they admit that the elongated fin of the fishapod would have been "worse than useless" on land and that the appendage is only "anatomically"--and not functionally--intermediate between lobed fins and legs. The article presented more evidence of the grip that evolution has on scientists than it did for the theory...
...chapters in the history of life--when creatures that swam in seas and rivers gave rise to things that walked, ran and crept on land. The fishapod appears to be a crucial link in the long chain that over time led to amphibians, reptiles, dinosaurs, birds and mammals. Indeed, Tiktaalik roseae, the official name bestowed on the fishapod (in the language of the local Inuit, tiktaalik means "large fish in stream"), falls anatomically between the lobe-finned fish Panderichthys, found in Latvia in the 1920s, and primitive tetrapods like Acanthostega, whose full fossil was recovered in Greenland not quite...
...This article consists of a complex illustration. Please see hardcopy of magazine.] Source: Neil Shubin, University of Chicago 380 million years ago BEFORE TIKTAALIK Lobe-finned fish had forelimbs suitable for moving in water but not on land 375 million years ago TIKTAALIK The forelimbs had the beginnings of fingers and a wrist, wrapped inside a fin 360 million years ago AFTER TIKTAALIK Tetrapod forelimbs have wrists and digits used for crawling on land [This article consists of a complex illustration. Please see hardcopy of magazine...
Proterozoic ? First shellfish and corals Cambrian Ordovician ? First fsh Silurian ? First land plants Devonian ? Tiktaalik ? First tetrapods Carboniferous ? First reptiles ? First mammal-like reptiles Permian Triassic ? First dinosaurs ? First mammals Jurassic ? First birds Cretaceous ? First flowering plants Cenozoic ? First horses...