trace fossil

短语

踪迹化石

词形变化

trace fossils 复数 trace fossils

释义与例句

n.
  1. 1.

    A type of fossil reflecting the reworking of sediments and hard substrates by organisms, rather than the physical remains of the organism itself. This includes structures such as burrows, trails, impressions, coprolites and borings.

    生物