Acetabularia
Acetabularia (mermaid's cup, mermaid's wineglass) A genus of dasycladalean algae in which the mature thallus consists of a single axis or ‘stalk’ with a whorl of gametangial sacs at the top. Found in warm regions in shallow, sheltered seas, attached to rocks, shells, etc. Fossil Acetabularia dating from the Tertiary have been found.
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Trachyte , trachyte Fine-grained volcanic rock of the alkaline series of intermediate rocks. Trachyte is the volcanic equivalent of syenite.
trachyte gritty vol… Rock , rock1 / räk/ • n. 1. the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underly… Iron Ores , Rocks
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Acetabularia