单词 | lebensspur |
释义 | lebensspurn. Geology and Biology. A track, burrow, cast, etc., left in sediment by a living organism; esp. such a trace preserved in fossil form in sedimentary rock (cf. trace fossil n. at trace n.1 Compounds 2). ΘΚΠ the world > life > biology > organism > fossil > [noun] > track or cast plasm1620 lebensspur1956 trace fossil1957 1956 Micropaleontology 2 251 It is well known that the majority of Chondrites and similar fossils are not algae but ‘Lebensspuren’ of various kinds. 1962 R. C. Moore Treat. Invertebr. Paleont. W. 178/2 Lebensspuren are very transient structures as compared with shells, skeletons, or other hard parts, and in general they have little chance of being preserved as fossils. 1973 Nature 30 Mar. 323/2 In a recently completed series of laboratory studies, lebensspuren were produced by individual macrobenthic organisms on a variety of marine sand and mud substrates. 2012 C. B. Miller & P. A. Wheeler Biol. Oceanogr. (ed. 2) xiv. 343/1 Activity in the deep-sea is slow enough that Lebensspuren might have ages of decades or longer. This entry has been updated (OED Third Edition, December 2016; most recently modified version published online March 2022). < n.1956 |
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