Their results, published in 1996, postulated that bilaterians diverged from more primitive animals deep into the Precambrian era, as much as 1.2 billion years ago.

• 他们的结果发表于1996年，其中推测，早在12亿年前的前寒武纪，两侧对称动物便已经从较原始的物种分支出来。