---
title: "Moule côtelée de l'Atlantique"
description: "Geukensia demissa — Autres animaux. Geukensia demissa is a species of mussel, a marine bivalve mollusk in the family Mytilidae, the true mussels."
canonical: https://animalchecklist.com/fr/animal/atlantic-ribbed-mussel
last_updated: 2026-09-20
---

# Moule côtelée de l'Atlantique

> Geukensia demissa — Autres animaux. Geukensia demissa is a species of mussel, a marine bivalve mollusk in the family Mytilidae, the true mussels.

- Scientific name: *Geukensia demissa*
- Category: `other` (Autres animaux)
- Habitats: `sea` (Mer et côte)
- iNaturalist observations: 8179
- Wikidata: [Q5554808](https://www.wikidata.org/wiki/Q5554808)
- iNaturalist taxon: [81608](https://www.inaturalist.org/taxa/81608)

## Names

- en: Atlantic Ribbed Mussel
- es: Mejillón acanalado del norte
- fr: Moule côtelée de l'Atlantique

## Countries with the most observations

US (6504), CA (456), MX (33)

## Summary

Geukensia demissa is a species of mussel, a marine bivalve mollusk in the family Mytilidae, the true mussels. This species is native to the Atlantic coast of North America. The common names  for this species include ribbed mussel, Atlantic ribbed marsh mussel and ribbed horsemussel. However, the common name ribbed mussel is also used for the Southern Hemisphere mussel Aulacomya atra. The appearance of the shell is grooved and oval in shape. The interior of this mussel is tinted purple.
The ribbed shells of this species usually attain a length of 10 cm length, and can be as large as 13 cm. Age can be determined by…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Geukensia_demissa

## Photo

![Moule côtelée de l'Atlantique](https://animalchecklist.com/img/animals/atlantic-ribbed-mussel/medium.jpg)

Photo: dinomariobob · CC0 · inaturalist — https://www.inaturalist.org/observations/305660333

## Machine access

`GET https://animalchecklist.com/api/v1/animals/atlantic-ribbed-mussel?lang=fr` — see [openapi.json](https://animalchecklist.com/openapi.json).