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English: Focus stacked image (composed of 40 frames) of a Orthoceras sp. found in Erfoud, region of Tafilalt, Morocco. The 5.3 centimetres (2.1 in)-long horn belongs to an extinct genus of nautiloidcephalopods that lived in the Silurian period and is approx. 420 million years old.
This is a featured picture on Wikimedia Commons (Featured pictures) and is considered one of the finest images. This is a featured picture on the persų language Wikipedia (نگارههای برگزیده) and is considered one of the finest images.
NOTE: This image is a focus stacked image of Adobe Photoshop consisting of 47 images that were merged using software. As a result, this image underwent digital manipulation which may have included blending, blurring, cloning, and colour and perspective adjustments. As a result of these adjustments, the image content may be slightly different than reality at the points where the images were combined. This manipulation is often required due to lens, perspective, and parallax distortions.
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Credit me as the original author and use the same license. To do so add "Diego Delso, delso.photo, License CC BY-SA" legibly next to the image.
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