生せい痕こん

noun

trace fossil

Paleontological term for fossilized evidence of organism activity, such as footprints, burrows, or feeding marks, rather than the organism's body itself.

• この地ち層そうからは恐きょう竜りゅうの生せい痕こんが多た数すう見みつかっている。

  Many dinosaur trace fossils have been found in this stratum.