Ví dụ về việc sử dụng The fossil record trong Tiếng anh và bản dịch của chúng sang Tiếng việt
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In other words, the fossil record has let Darwin down.
But these hypotheses are not reflected in the fossil record.
The fossil record of this family dates back to the Miocene epoch.
What we find from the evidence around us and from the fossil record is that, as the law of biogenesis states, life can only arise from life.
The fossil record for pipids is relatively good, with 12 extinct species known.
Intact fossils of the Middle Devonian cladoxylopsid qWattieza show it to have been a tree,the earliest identified in the fossil record as of 2007.
This illustration shows the percentage of marine animals that went extinct at the end of the Permian era by latitude,from the model(black line) and from the fossil record(blue dots).
Tarbosaurus is very well represented in the fossil record, known from dozens of specimens, including several complete skulls and skeletons.
For example, up until 1938, paleontologists accepted the idea that coelacanths(an ancient fish)went extinct at the time that they last appear in the fossil record about 80 million years ago.
This suggests, he adds,“that there was likely only asingle domestication event for the dogs observed in the fossil record from the Stone Age and that we also see and live with today.”.
The fossil record tells us that Glossopteris plants commonly had tongue-shaped leaves found in thick mats, leading scientists to think they were deciduous.
It's exceedlingly rare for fur,skin and muscle tissues to be preserved in the fossil record, but all three are present on these specimens, which have radiocarbon-dated to more than 50,000 years old.
The fossil record indicates that birds evolved from theropod dinosaurs during the Jurassic, and consequently they are considered a type of dinosaur in modern classification systems.
Hard anatomy characters such as teeth andbones preserve well in the fossil record and are the main source of information about howfossil animals are related to their modern counterparts.
The fossil record indicates that birds evolved from theropod dinosaurs during the Jurassic Period and, consequently, they are considered a subgroup of dinosaurs by many paleontologists.
We analysed a lot of data on the behavior and ancestry of living animals for two reasons-first, because the fossil record from that era is very limited; and second, behavior as a trait is very hard to infer from fossils, .
The fossil record appears to show that the rate of extinction is slowing down, with both the gaps between mass extinctions becoming longer and the average and background rates of extinction decreasing.
From the 1970s onwards, the Harvard evolutionary biologist Steven Jay Gould, for example,complained that little evidence could be found in the fossil record of the slow and gradual evolution of species as theorized by Darwin.
This is because it confirms that the fossil record offers an extremely accurate account of how these amazing animals evolved over time and gives clues as to how mammals and birds evolved from them.”.
This is the first time that we have made a mechanistic prediction about what caused the extinction that can be directly tested with the fossil record, which then allows us to make predictions about the causes of extinction in the future,” said Mr Penn.
The fossil record gives us a natural model system for studying species' responses to climate change,” says Jack Williams, professor of climate, people and environment at the University of Wisconsin-Madison, and one of the authors.
Mammals continued to expand their range: eutriconodonts produced fairly large, wolverine-like predators like Repenomamus and Gobiconodon, early therians began to expand into metatherians and eutherians,and cimolodont multituberculates went on to become common in the fossil record.
The fossil record indicates that the evolution of camelids started in North America(see figure 6c), from which, six million years ago, they migrated across the Bering Strait into Asia and then to Africa, and 3.5 million years ago through the Isthmus of Panama into South America.
Discovery of this new species was a shock to us because prior to this, the fossil record suggested that the evolutionary tree of platypuses was relatively linear one,” said Dr. Michael Archer of the University of New South Wales, a co-author of the study.
Evidence of marine regressions and transgressions occurs throughout the fossil record, and these fluctuations are thought to have caused or contributed to several mass extinctions, among them the Permian-Triassic extinction event(250 million years ago) and Cretaceous-Paleogene extinction event(66 Ma).