Whichever came first, comb jellies and jellyfish (and other Cnidarians) made an important step in evolutionary history: they are the earliest known animals to have organized tissues—their epidermis and gastrodermis—and a nervous system.
первый Whichever расчески, желе и jellyfish все сделать Cnidarians (и других), эволюционной истории: step inОни - известный животных есть текст organized организации они до epidermis gastrodermis - и - и нервной системы.