| 释义 |
Definition of worm tube in English: worm tubenoun The calcareous or sandy tube of some sedentary marine worms, such as fan worms. Example sentencesExamples - Thin sections were made of the carbonates containing worm tubes.
- A few mineralized animal fossils, including sponge spicules and probable worm tubes, are known from the Vendian period immediately preceding the Cambrian.
- Some of the outgrowths result from the colony encrusting worm tubes or other cylindrical objects but many are solid with a firm gelatinous core.
- Ammonoids, gastropods, and serpulid worm tubes are also recorded.
- Yet another mode of preservation is represented by 50 irregularly cylindrical objects originally interpreted by Boyd as silicified burrows or worm tubes.
|