triquetra

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triquetra

An ornament composed of three half circles or ellipses crossed and joined together at their ends.
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Stage III is characterized by a decrease in Drepanocladus aduancus and a corresponding increase in Calliergon trifarium and Meesia triquetra. Low shrubs such as Vaccinium macrocarpon and Andromeda glaucophylla appeared.
Induced phagotrophy in the photosynthetic dinoflagellate Heterocapsa triquetra. Aquat.
Subfossils from similar sediments above and below the bones included scales of sunfishes (family Centrarchidae), a shell of Gyraulus parvus (wheel snail), seeds of Nymphaea tuberosa (white water lily), and fragments of the mosses Calliergon stramineum and Meesia triquetra.