Examples of Ediacaran period in the following topics:
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- Early animal life (Ediacaran biota) evolved from protists during the pre-Cambrian period, which is also known as the Ediacaran period.
- The time before the Cambrian period is known as the Ediacaran period (between 635-543 million years ago), the final period of the late Proterozoic Neoproterozoic Era .
- Other organisms, such as Cyclomedusa and Dickinsonia, also evolved during the Ediacaran period .
- Fossils of (a) Cyclomedusa and (b) Dickinsonia that evolved during the Ediacaran period.
- The Ediacaran period was the final period of the Proterozoic Era which ended in the Cambrian period of the Phanerozoic Era.
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- Echinoderms, mollusks, worms, arthropods, and chordates arose during this period.
- Unresolved questions about the animal diversification that took place during the Cambrian period remain.
- For example, we do not understand how the evolution of so many species occurred in such a short period of time.
- Furthermore, the vast diversification of animal species that appears to have begun during the Cambrian period continued well into the following Ordovician period.
- These fossils (a–d) belong to trilobites, extinct arthropods that appeared in the early Cambrian period 525 million years ago and disappeared from the fossil record during a mass extinction at the end of the Permian period about 250 million years ago.
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- The periodic table is a means of organizing the various elements according to similar physical and chemical properties.
- The different elements are organized and displayed in the periodic table.
- In the periodic table the elements are organized and displayed according to their atomic number and are arranged in a series of rows (periods) and columns (groups) based on shared chemical and physical properties.
- Moving from left to right across a period, the elements have greater non-metallic character.
- The periodic table shows the atomic mass and atomic number of each element.
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- Seed ferns gave rise to the gymnosperms during the Devonian Period, allowing them to adapt to dry conditions.
- Seed plants resembling modern tree ferns became more numerous and diverse in the coal swamps of the Carboniferous period.
- Following the wet Mississippian and Pennsylvanian periods, which were dominated by giant fern trees, the Permian period was dry.
- The Jurassic period was as much the age of the cycads (palm-tree-like gymnosperms) as the age of the dinosaurs.
- Explain how and why gymnosperms became the dominant plant group during the Permian period
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- Biodiversity has been affected by five mass extinction periods, which greatly influenced speciation and extinction rates.
- The fossil record of the mass extinctions was the basis for defining periods of geological history, so they typically occur at the transition point between geological periods.
- The main hypothesis for its cause was a period of glaciation followed by warming.
- The late Devonian extinction may have occurred over a relatively long period of time.
- The table shows the time that elapsed between each period.
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- The modern mammals of today are synapsids: descendants of a group called cynodonts which appeared in the Late Permian period.
- The evolution of mammals passed through many stages since the first appearance of their synapsid ancestors in the late Carboniferous period.
- They are the only living synapsids as earlier forms became extinct by the Jurassic period.
- Throughout the Permian period, the synapsids included the dominant carnivores and several important herbivores.
- Cynodonts, which first appeared in the Late Permian period 260 million years ago, are thought to be the ancestors of modern mammals.
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- Reptiles originated approximately 300 million years ago during the Carboniferous period.
- Soon after the first amniotes appeared, they diverged into three groups (synapsids, anapsids, and diapsids) during the Permian period.
- The Permian period also saw a second major divergence of diapsid reptiles into archosaurs (predecessors of crocodilians and dinosaurs) and lepidosaurs (predecessors of snakes and lizards).
- The dominance of dinosaurs lasted until the end of the Cretaceous period, the end of the Mesozoic Era.
- Edmontonia, an example of an extinct quadruped reptile, was an armored dinosaur that lived in the late Cretaceous period, 145.5 to 65.6 million years ago.
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- The geologic periods of the Paleozoic are marked by changes in the plant life that inhabited the earth.
- The early era, known as the Paleozoic, is divided into six periods.
- It starts with the Cambrian period, followed by the Ordovician, Silurian, Devonian, Carboniferous, and Permian.
- Fossilized cells, cuticles, and spores of early land plants have been dated as far back as the Ordovician period in the early Paleozoic era.
- Fossils indicate that by the end of the Devonian period, ferns, horsetails, and seed plants populated the landscape, giving rising to trees and forests.
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- The periods that followed the Cambrian during the Paleozoic Era were marked by further animal evolution and the emergence of many new orders, families, and species.
- During the Ordovician period, which followed the Cambrian period, plant life first appeared on land.
- Such periods of mass extinction have occurred repeatedly in the evolutionary record of life, erasing some genetic lines while creating room for others to evolve into the empty niches left behind .
- The end of the Permian period (and the Paleozoic Era) was marked by the largest mass extinction event in Earth's history, a loss of roughly 95 percent of the extant species at that time.
- Another mass extinction event occurred at the end of the Cretaceous period, bringing the Mesozoic Era to an end.
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- Climate refers to long-term, predictable atmospheric conditions, while weather refers to atmospheric conditions during a short period of time.
- In contrast, weather refers to the conditions of the atmosphere during a short period of time.
- Weather, in contrast, refers to the conditions of the atmosphere during a short period of time.