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Image 1:

Image   •   Sep 07, 2016 17:59 BST

Top left: body outline of Acanthostega, with the humeri in red. Bottom left: 3D model of a humerus of Acanthostega, generated from a synchrotron scan, with magnifying glass indicating position of the high-resolution section shown on the right. Right: section through the bone showing annual growth rings that allowed the researchers to assess the seasonal growth rhythms and individual age.
License Creative Commons Attribution, no derivatives (?)
Photographer / Source Sophie Sanchez
Size 4.91 MB
Format .jpg
Image dimensions 4355 x 3000 pixels