せいこんかせき
生痕化石
1. trace fossil
2. Trace fossilTrace fossils, also called ichnofossils, are geological records of biological activity. Trace fossils may be impressions made on the substrate by an organism: for example, burrows, borings, urolites (erosion caused by evacuation of liquid wastes), footprints and feeding marks, and root cavities.
Read “Trace fossil” on English Wikipedia
Read “生痕化石” on Japanese Wikipedia
Read “Trace fossil” on DBpedia
Read “Trace fossil” on English Wikipedia
Read “生痕化石” on Japanese Wikipedia
Read “Trace fossil” on DBpedia
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