Annelids in the family Lumbricidae, earthworms, possess a regionalization of the digestive track called calciferous glands, Kalkdrüsen, or glandes de Morren, that processes calcium and into calcium carbonate, which is later excreted into the dirt. The function of these glands is unknown but is believed to serve as a regulation mechanism within the animals' tissues. This process is ecologically significant, stabilizing the pH of acid soils.
Annelids in the family Lumbricidae earthworms possess a regionalization of the digestive track called calciferous glands Kalkdrüsen or glandes de Morren that processes calcium and into calcium carbonate which is later excreted into the dirt The function of these glands is unknown but is believed to serve as a regulation mechanism within the animals' tissues This process is ecologically significant stabilizing the pH of acid soils