Image: Margaritifera-margaritifera-map-eur-nm-moll

Description: Margaritifera margaritifera (Linnæus, 1758). Distributional range in Europe, scientific state of knowledge of 2012. Source description in English. Light colour indicated rare occurrences or regions where the species could eventually be expected to occur. Dark colour indicated relatively reliable occurrences, as well as regions where the species was expected to occur, and where the species was not known to be extremely rare. Dark colour indications were not necessarily based on published records.
Title: Margaritifera-margaritifera-map-eur-nm-moll
Credit: Distributional range map as published in Welter-Schultes, F. 2012: European non-marine molluscs, a guide for species identification. Pp A1-A3, 1-679, Q1-Q78.
Author: Francisco Welter-Schultes
Usage Terms: Creative Commons Zero, Public Domain Dedication
License: CC0
License Link: http://creativecommons.org/publicdomain/zero/1.0/deed.en
Attribution Required?: No