# Orthoceras, Erfoud, Marruecos, 2021-01-24, DD 001-047 FS

- By: Diego Delso
- Date: 2021-01-24
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Orthoceras,_Erfoud,_Marruecos,_2021-01-24,_DD_001-047_FS.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/c/c1/Orthoceras%2C_Erfoud%2C_Marruecos%2C_2021-01-24%2C_DD_001-047_FS.jpg/1920px-Orthoceras%2C_Erfoud%2C_Marruecos%2C_2021-01-24%2C_DD_001-047_FS.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

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 nautiloid cephalopods that lived in the Silurian period and is approx. 420 million years old.