# Gryphaea arcuata 01

- By: H. Zell
- Date: 2021-07-11
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:Gryphaea_arcuata_01.jpg)
- Rights: [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0)
- Picture: https://invisiblenetwork.ai/thumbs/commons/thumb/a/a7/Gryphaea_arcuata_01.jpg/1920px-Gryphaea_arcuata_01.jpg
- Who can see it: Teens profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

Gryphaea arcuata Lamarck, 1801, Devil's Toenail; height 4.5 cm; Black Jurassic α III; nearEngstlatt, Baden-Württemberg, Germany; Shell of own collection, therefore not geocoded.