The spine of the early creeping fish, Tiktaalik, was more like that of a land animal.

The spine of the early creeping fish, Tiktaalik, was more like that of a land animal.

Scans present that the backbone and ribs of Tiktaalik, one of many first fish to crawl on land, have options extra like these of the primary land animals than fish.

Life


February 20, 2023

Tiktaalik had fins tailored for crawling on land.

Historical past of Science Photos/Alamy

A CT scan of the fossil of Tiktaalik, one of many first fish to crawl on land, revealed extra options of its physique which might be intermediate between fish and terrestrial animals. Particularly, they present that their fins are starting to connect to their backbone; it is a characteristic of the limbs of land vertebrates, however not of the fins of fish.

“That is an surprising consequence, given the best way we’ve got reconstructed this animal previously,” he says. Thomas Stuart at Pennsylvania State College.

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