从化石上腿痕迹的位置，腹部的曲线印记，且化石中缺少翅膀的标志，研究员猜测那些痕迹是古浮游笔直的竖起一对翅膀休息时留下的。

From the position of the legs, the curve of the abdomen, and the lack of wing marks, the researchers suspect that the imprint was made by an ancient mayfly that held its wings upright when at rest.

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这种痕迹包括在咬噬边缘上骨骼末端的弯曲、刺穿印记、表面的线性印记、剥落、小圆齿状的末端和双拱形的刺印。

It includes bent ends of bones, puncture marks, superficial linear marks, peeling, crenulated ends and double arch punctures on the chewed edge.

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一种被称为记忆印记的理论认为，记忆的痕迹或碎片以生物物理变化或生物化学变化的形式分布于整个大脑。

One theory holds that memory traces or fragments are distributed throughout the brain as biophysical or biochemical changes called engrams.

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