| 词汇 | example_english_fossil-record |
| 释义 | Examples of fossil recordThese 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. Biases in the fossilrecord can be due to features or mechanisms predating or postdating the collecting or during the collection process itself. Nobody is pretending from this latter perspective that the fossilrecord is perfect, but it is argued it is good enough to derive a history. However, despite the abundance of sequence data from genomes of organisms, molecular time estimates rely on accurate calibrations, usually from the fossilrecord. This is unlikely to be available, as there is not likely a fossilrecord of pain faces. But there are other data from the fossilrecord, which are surely relevant to the evolution of a less narrowly defined object of study. The fossilrecord also reveals that anatomical changes that broadened and shortened the pelvis and reshaped the birth canal began occurring well before this exodus. The passage times through an arm are simple multiples of published results on impact and fossilrecord periodicity and galactic plane half-periods. The latter have a chitinous exoskeleton like insects and are often associated with them in the fossilrecord. This is consistent with rare examples of soft tissue evidence from the body fossilrecord. As a corollary, the fossilrecord was implicitly and rhetorically (though not practically) substituted with the molecular record. As with vegetative tissue, it is not possible to assess the desiccation response of early seeds from the fossilrecord. In contrast, the terrestrial fossilrecord is sparse and incomplete. How far back in time can the fossilrecord of eukaryotes be extended? Their analysis provides the mathematical foundation necessary for understanding the data of the fossilrecord. Taeniosomus lampridiforms are poorly represented in the fossilrecord. The traces most likely to survive into the fossilrecord are those made (deep) within the sediment away from physical and biological disturbances. The fossilrecord churned out signatures of beasts no longer to be found, challenging biblically literal accounts of natural history. In addition, for the most part the fossilrecord receives little attention. Research should now concentrate on richer and 'finergrained' assemblages of herbivores if co-evolutionary patterns are ever to be recognized in the fossilrecord. At the same time, major new insights into eukaryotic evolution from both the fossilrecord and molecular biology go entirely unreported. Even so, the fossilrecord of the whole organism is not complete enough to make any conclusions on how ballooning may have derived. In particular, a fossilrecord of cultural change exists for our species that puts the biological fossilrecord to shame. But if zoologists cannot afford to ignore the fossilrecord, so too should we remain informed about their activities and programmes. Xidazoon, it now turns out, is a primitive deuterostome: once again the fossilrecord reveals a remarkable but entirely unexpected evolutionary story. In doing so, he was one of the main architects of the palaeontological renaissance in the way we have come to view the fossilrecord. The fossilrecord shows that they had brains much larger proportionately than those of earlier hominid species. Molecular clocks are useful tools for astrobiology because of the poor fossilrecord of early life. Other factors, such as regressions, can exacerbate the bias toward gradual disappearance of taxa from the fossilrecord. Fully bipedal locomotion is absent in chimpanzees, but its evolution can be studied because the fossilrecord preserves skeletal features needed to support the biomechanics of bipedal locomotion. On two occasions, separated by a span of ten years, this author studied the origination and extinction rates of biological taxa found in the fossilrecord. If direct knowledge of historical sequences from paleontological data established the only path to resolution, then imperfections of the fossilrecord would preclude resolution at sufficient frequency. Within processual archaeology, she suggests that the model of the fossilrecord prevails, such that the evidence is considered to be a material outcome of past patterns of behaviour. Extinction and the fossilrecord of the arthropods. Fourth, it should be possible to reverse the inference, and to use the fossilrecord to infer something about the nicheconstructing capabilities of animals, including hominids. Although the cell dimensions of microbes can not be taken as an absolute criterion for recognizing a eukaryotic organization in the fossilrecord, this may prove important in inferring affinity. The fossilrecord is discontinuous in time and the recorded ranges of species or of higher taxa can only extend to their last known occurrence in the fossilrecord. Because behavior doesn't leave a fossilrecord, statements regarding the evolution of behavior are inevitably inferential and based largely on comparisons between related groups of living species. This is a particularly important issue in terms of brain evolution, which, for most features, lacks a fossilrecord and must be deduced from the study of extant species. In contrast to the constraints on our knowledge of paleoneurology, we have a more detailed fossilrecord of the evolution of the skull than of the brain. Ballooning behaviour has no unique morphological characters that are traceable in the fossilrecord, and this fact distinguishes this study from almost all other phylogenetic analyses. Early diversification of organisms in the fossilrecord. The quality of the fossilrecord: populations, species, and communities. While the fossilrecord has given us a reasonably clear picture of the evolution of the vocal tract, grammatical structure, needless to say, is not preserved in geological strata. On the experimental silicification of micro-organisms in the fossilrecord. Mammoths, mastodonts, and elephants: biology, behaviour, and the fossilrecord. The fossilrecord of birds. Quality of the fossilrecord through time. A living heritage could all too swiftly become a dead fossilrecord. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 Exacerbating these issues, columbids are not well represented in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fossilrecord shows a floral community dominated by conifers, ginkgoes, ferns, cycads, bryophytes, horsetails and a few flowering plants. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Although they are thought to be primitive forms, they have no fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Orthogenesis was particularly popular among some paleontologists, who believed that the fossil record showed patterns of gradual and constant unidirectional change. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They have a long fossilrecord, easily distinguished from other fishes by the presence of an additional set of bones in the throat. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fossils themselves are referred to as the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fossilrecord adds little to the issue. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. An earlier study predicted that about 3400 dinosaur genera existed, including many which would not have been preserved in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Since the other classes of annelids (specifically, the earthworms and leeches) lack hard parts, only the sea-dwelling polychaetes are frequently represented in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Archaic biological features and organisms are succeeded in the fossilrecord by more modern versions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Six species are known from the fossilrecord, including three which are extinct. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fossilrecord of antlions is very small by neuropteran standards. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Both marine and terrestrial environments are represented by this long and rich fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Most of the fossilrecord consists of teeth. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fossilrecord of cephalopod eggs is scant since their soft, gelatinous eggs decompose quickly and have little chance to fossilize. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. If this interpretation is correct, these embryos represent the earliest known example of vivipary in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This might be a result of the in general poor fossilrecord of this epoch. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. For example, a fossilrecord may make it possible to determine the number of years between an ancestral species and a descendant species. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This would be consistent with its earlier appearance in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The difference is most likely due to quirks of the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This link is especially well documented in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Here, the majority of types of modern animals appeared in the fossilrecord, as well as unique lineages that subsequently became extinct. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. That research is grounded in the fossilrecord, but draws extensively on living animals. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Stromatolites represent large colonies of microorganisms, and are found both in the fossilrecord and rarely in modern hypersaline environments. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. There are more species to be found in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The church accepts modern geological theories on such matters and the authenticity of the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, more recent research indicates that this figure is obscured by taphonomical biases and the scarcity of the continental fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This coincides with a period in which many modern genera of birds became recognizable in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, evidence of navicular degeneration has been established in the fossilrecord of early horses. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Only an estimated 12% of the bat fossilrecord is complete at the genus level. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It also considerably narrowed the gap between the earliest known fossilrecord and estimated time of divergence of this clade from other baleen whales. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This sudden finding showed just how patchy the known fossilrecord was. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fossilrecord includes a large number of other classes which do not appear to fall into any extant crown group. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The fossilrecord of seahorses, however, is very sparse. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is an ancient genus, as evidenced by the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This feature, added to a distinctive epidermal morphology means that well-preserved specimens can be easily identified in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. When used carefully, these techniques often, but not always, agree with the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Some parasites leave marks or traces (ichnofossils) on host remains, which persist in the fossilrecord in the absence of structural remains of the parasite. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Larger animals are too scarce in the fossilrecord for good statistics, so paleontologists have analyzed microfossil extinctions. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Determining mass is even more difficult, because little evidence of soft tissues survives in the fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, the fossilrecord retains evidence of many of these older species. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The remaining 110 families occur in the recent past, with or without a fossilrecord. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This may be the point that stands out in the fossilrecord, when dogs and wolves began to develop noticeably different morphologies. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. However, it is almost impossible to be sure that any form represented in the fossilrecord is a direct ancestor of any other. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. In contrast, their wide geographic dispersion in the fossilrecord is uncharacteristic of benthic animals, suggesting a pelagic existence. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. 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. |
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