This must not be taken to mean, however, that the medusa is derived from a sessile polyp; it must be regarded as a direct modification of the more ancient free actinula form, without primitively any intervening polyp-stage, such as has been introduced secondarily into the development of the Leptolin
intervening הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד