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**New Fossils Fill the Evolutionary Gap Between Fish and Land Animals**(First Draft) Written by: Elizabeth Cantrell

Ellesmere Island, Nunavut Territory-//Titaalik// //roseae//, better known as the “fishapod,” is a 375 million year old fossil fish which was discovered in the Canadian Arctic in 2004. This discovery sheds light on how the fishes evolved into land animals. Even humans evolved from these primitive amphibians, according to Farish Jenkins. "The skeleton of Tiktaalik indicates that it could support its body under the force of gravity whether in very shallow water or on land," says Jenkins of Harvard University. "This represents a critical early phase in the evolution of all limbed animals, including us." //Titaalik// was a cross between one of the first four-legged animals and the fishes it lived with prior to evolving. When you first lay your eyes on //Titaalik//, it appears most similar to a fish. "This animal is both fish and tetra pod. We jokingly call it a fishapod," said Neil Shubin of the University of Chicago. Take a closer look and you’ll see it shares many anatomical features with amphibians and some mammals today. While its fins are not strong enough to walk on, the bone structure is similar to that of all limbed animals. //Titaalik// has fins and scales, like primitive fishes, but also has shoulders, ribs and a neck. The ribs provide support for the body and aid //Titaalik// in breathing. //Titaalik// most likely had lungs and gills. The swim bladders in today’s fish most likely evolved from the lungs in primitive fishes and tetra pods—like //Titaalik//. Scientists are very excited about reaching this evolutionary milestone, a skeletal progression from fish to land-roaming tetra pods.

"Nsf.gov - National Science Foundation (NSF) News - New Fossils Fill the Evolutionary Gap Between Fish and Land Animals - US National Science Foundation (NSF)." //Nsf.gov - National Science Foundation - US National Science Foundation (NSF)//. 5 Apr. 2006. Web. 13 May 2010. . Sarfati, Jonathan. "Tiktaalik Roseae—a Fishy ‘missing Link’." 15 Apr. 2006.

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