生せい痕こん化か石せき

noun

trace fossil

Technical term in paleontology for fossilized remains of animal activity, such as footprints, burrows, or coprolites, rather than body parts.

• 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化か石せきが多た数すう見みつかっている。

  Many dinosaur trace fossils have been found in this stratum.