The non-cellular order Siphoneae is fairly well represented in Palaeozoic strata, especially by calcareous verticillate forms referable to the family Dasycladeae; the separate tubular joints of the articulated thallus, bearing the prints of the whorled branches, are sometimes cylindrical (Arthropore
verticillate הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד