词汇 | fossil |
释义 | fossil noun[ C ] uk /ˈfɒs.əl/ us /ˈfɑː.səl/ fossilnoun[C] (IN ROCK)the shape of a bone, a shell, or a plant or animal that has been preserved in rock for a very long period化石 John Cancalosi/Photolibrary/GettyImages Palaeontology & fossils ammonite ammonoid biozone carbon dating fossil record fossilization fossilize fossilized index fossil microfossil missing link palaeontologist palaeontology petrifaction petrify radiocarbon dating unfossiliferous fossilnoun[C] (PERSON)informalhumorous an old person, especially one who will not accept new ideas老人;(尤指)老顽固,思想僵化的人,老古董 People who are boring and old-fashioned bore buzzkill Colonel Blimp crashing bore dinosaur drip fogey grind has-been killjoy Luddite normcore nudnik spod spoilsport square stick-in-the-mud stuffed shirt uncharismatic yawn fossil | American Dictionaryfossil noun[ C ] us/ˈfɑs·əl/ biology, earth science part of a plant or animal, or its shape, that has been preserved in rock or earth for a very long period Examples of fossilfossil Chitinozoans and a few graptolites were found in the unit, but no other fossils. However, their exact stratigraphic relation to the trace fossils is not clear. In this chapter typical examples of the kinds of fossils most commonly encountered are illustrated by beautiful specimens. At the opposite end of the scale from the phylum is the smallest unit of classification usually used for fossils: the species. The small, lentil-shaped fossils are a separate form of the same species. Most bivalve fossils are a few centimetres long; the ideal size for collecting. Here, no vertebrates at all could be found, the fossils consisting only of invertebrates such as the trilobites. However, this technique only provides an external morphological description of putative fossilized cells and is incapable of distinguishing between abiotic fossils of similar morphologies. The conditions leading to preservation of these fossils are undoubtedly rare but not entirely unique. The fossils were found in the middle part of the road-cut. The use of trace fossils as proxies for the presence of animals allows palaeoecological data to be gathered in the absence of body fossils. A biostratigraphic correlation was possible as the fauna was not associated with other fossils and was unique. The illustrations are mostly high quality black-and-white photos but there are also 16 pages of excellent colour photos of fossils and their living counterparts. The zone is 170 m thick, and ammonoids and other fossils occur as imprints in mudstones and as shell-rich layers in sandy turbidites. The book is far more than a mere description of sedimentary indicators of facies and of fossils as tracers of environment. See all examples of fossil These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
随便看 |
|
反思网英语在线翻译词典收录了377474条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。