1æã¯å°ãã®éããã¹ããé¢ããŠãè«ãã¯ã¢ã«ã€ããŠåŠãã§ããŸãã
ããã¹ãã®äžã§ã¯ãvertebratesïŒèæ€åç©ïŒããæ±ã£ãŠããªãã®ã§ãããåäŸãã¡ãèå³ãæã£ãŠãããšããããšã§ãinvertebratesïŒç¡èæ€åç©ïŒãåãäžããŠããŸãã
æè«ã¯è¶³ã6æ¬ã ããã©ãã¯ã¢ããµãœãªã¯8æ¬ããããªéãã«ããã£ãããšæ°ãä»ãããšãåºæ¥ãŸããïŒ
12æïœ1æäžæ¬ãŸã§ã¯ãäºæã«ã€ããŠåŠã³ãŸããã
å®éã«æ§ã ãªã«ãããå ãã§ã¿ãããå³èŠãããŠã¿ãããå®éã«ãã«ã«äºæã䜿ã£ãŠåŠã³ãæ·±ããŸããã