inclusion. 24. Define the law of superposition. 25. Define the principle of original horizontality. 26. Define the principle of uniformitarianism. 27. What does the phrase “correlating rock layers” mean? 28. Define index fossil. 29. Define fossil. 30. Define cross-cutting relationships in terms of rock layers. 31. Be able to analyze a diagram of rock layers. Recall the relative dating activity we completed in class. 32. Be able to analyze a diagram depicting
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Telling Geologic Time Putting it in perspective Determining geological ages • Relative age dates – placing rocks and events in their proper sequence of formation • Numerical dates – specifying the actual number of years that have passed since an event occurred (known as absolute age dating) Figure 1-15 (p. 16) Geologic Time Scale. Uniformitarianism The physical‚ biological and chemical principles acting on the Earth in the present also acted on the Earth in the past
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Soltisand Douglas E. Soltis‚the fossil record that they found out does not clarify basal groups within the angiosperms. However‚ it clearly identifies a number of form and structure of diverse lineages early in angiosperm evolution. The earliest known large fossil confidently identified as an angiosperm‚ Archaefructusliaoningensis‚ is dated to about 125 millionyears or also known as Cretaceous period‚ whereas pollen considered to be of angiosperm origin takes the fossil record back to about 130 million
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it was very common for them to uncover dinosaur bones. In fact‚ a T-Rex skeleton was found in a suburb of Denver. However‚ they do not consider this their greatest find in this area. They managed to come across a serrated tooth. This was the prize fossil at the site. In 1994‚ they came across a dinosaur rib while building the Colorado Rockies stadium. Data gathering‚ depiction‚ and analysis of this area has made it possible for the residents of that area to appreciate what interesting things lie in
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QUIZZES 1 *Current Anthropology is more specialized & help people be more tolerant 4MAJOR SUBFIELDS OF ANTHRO: Linguistics;Archaeology;Sociocultural; Biological 1 Biological or Physical Anthropology least likely to study insect fossils human palaeontology and human variation others are interested how and why contemporary human populations vary biologically and interactions bet biology‚ environment and behaviour 2 Archaeology reconstruct daily life of ancient people and customsand
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Fossil record and genetic record of relationship between the species The oldest fossil evidence found was approximately 3.8 million years old. Although these were said to be the “oldest” there have been more modern research done that shows DNA comparisons of ancient fossils and more recent bones. This evidence is known as the clue to the ancestor of all cats including the domestic cat‚ margay‚ and marbled cat. In China‚ Archaeologists have found the first clear evidence of domestic and/or
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feathers that are complex‚ a fused clavicle‚ short bony tails‚ bones that are filled with air sacs‚ efficient breathing‚ and a fast growth rate. When comparing fossils to birds‚ they had many of the same features. Some dinosaurs had feathers‚ Dr. Curry Roger’s provided us with pictures of these feathers. Additionally‚ the bones of these fossils also showed evidence of air sacs and had reached sexual maturity quickly‚ showing that they too were fast growers. Additionally‚ new evidence shows that dinosaurs
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Crustaceae. Because of this information the scientist has came to a conclusion that Metazoa started way before Cambrian period. Although back than it was invisible. How did they get this idea? Well they got this based on the study of putative trace fossils. In addition there was frustration to this idea because they wondered why fossilizable forms of various phyla appeared almost simultaneously and wrong. This means that there was some mistake that the scientist has made with their hypothesis about
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natural selection occurred in step-wise fashion. Assignment Write 3–4 pages on the following (not including the title and reference pages): •Explain the concepts of phyletic gradualism and punctuated equilibrium. •What predictions about the fossil record does punctuated equilibrium make? •In this model‚ what are the processes that produce rapid evolution? Which evolutionary factors are responsible for the periods of relative stasis? •Patterns of punctuated equilibrium have been observed in
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qualify these units as Early‚ Mid‚ and Late when referring to time‚ and Lower‚ Middle‚ and Upper when referring to the corresponding rocks. Geologic units from the same time but different parts of the world often look different and contain different fossils‚ so the same period was historically given different names in different locales. To describe the geologic time‚ scientists use the geologic time scale‚ which is a system of chronological measurement that relates stratigraphy to time. Objective
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