Ancient marine organism's dual-layer structure reveals both past and present ocean environments https://phys.org/news/2025-02-ancient-marine-dual-layer-reveals.html
A cosmopolitan calcifying benthic #foraminifera in agglutinated disguise as a geochemical recorder of coastal environments https://www.pnas.org/doi/10.1073/pnas.2413054122
"This species has a remarkable hidden feature—an inner shell made of calcium carbonate beneath its outer layer of gathered particles... [this] made them an excellent recorder of environmental conditions."