This paddle-finned fish may have returned to swimming in search of tasty meat.
, Stewart says. But when they used CT scanning to get a better look at the fossil embedded within the rock, they realized that the creature’s upper arm bone had some unique characteristics.
“The surprise for us really was in the shape of the humerus, which suggested that this is not an animal that could support its body with its fins likeand like tetrapods,” Shubin says, referring to four-limbed animals with backbones. “This is an animal probably more suited for open-water habitats.” The fossil included the lower jaws, partial upper jaws, fragments of neck bone, scales from various parts of the body, and the left pectoral fin.was named for the Inuktitut word Qikiqtaaluk/Qikiqtani, the region where the fossil was found. The researchers estimate that it lived roughly 375 million years ago, making it slightly older thanwould have reached about 2.5 feet in length and had an elongated body with a broad and paddle-like fin, sharp teeth, and eyes perched on top of a flat head.
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