Producing or bearing calamites (an extinct type of tree-like plants); bearing reed-like plants.
From Latin 'calamites' (a fossil plant genus) combined with '-ferous' meaning 'bearing' or 'producing.' The term is used in paleobotany to describe formations containing these ancient plants.
Calamiferious rocks are time capsules from 300 million years ago—they literally contain the fossilized remains of ancient tree-ferns, giving paleontologists direct evidence of Earth's climate and atmosphere before dinosaurs even existed.
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