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Abstract Midway through the Mesozoic, ~196–190 Ma, mammalian brains reached a size typical of Paleocene eutherians, which lived at least 120 million years later. Across all mammals, body mass increased during the Paleocene without much, if any, relative increase in brain or cortex size. Later, the c...
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croxfordunivpr:10.1093/oso/9780192868398.003.0010 2024-06-23T07:57:12+00:00 Other orders Wise, Steven P. 2023 http://dx.doi.org/10.1093/oso/9780192868398.003.0010 https://academic.oup.com/book/chapter-pdf/58168958/oso-9780192868398-chapter-10.pdf en eng Oxford University PressOxford Cortical Evolution in Primates page 160-176 ISBN 019286839X 9780192868398 9780191964336 book-chapter 2023 croxfordunivpr https://doi.org/10.1093/oso/9780192868398.003.0010 2024-06-11T04:17:20Z Abstract Midway through the Mesozoic, ~196–190 Ma, mammalian brains reached a size typical of Paleocene eutherians, which lived at least 120 million years later. Across all mammals, body mass increased during the Paleocene without much, if any, relative increase in brain or cortex size. Later, the cortex expanded independently in several mammalian lineages. Cortical enlargement in cetaceans most closely resembled what happened in primates: a cortical expansion in toothed whales by the late Eocene (in parallel with Eocene primates); another in oceanic dolphins during the middle-to-late Miocene (in parallel with monkeys). In contrast, cortical expansion in other large-cortex mammals, such as ungulates and carnivores, had a different, mostly later time course. Like primates, several carnivore lineages developed a relatively large cortex independently. In mammals, a larger brain almost always resulted from cortical expansion, but there were exceptions. Book Part toothed whales Oxford University Press 160 176 |
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Abstract Midway through the Mesozoic, ~196–190 Ma, mammalian brains reached a size typical of Paleocene eutherians, which lived at least 120 million years later. Across all mammals, body mass increased during the Paleocene without much, if any, relative increase in brain or cortex size. Later, the cortex expanded independently in several mammalian lineages. Cortical enlargement in cetaceans most closely resembled what happened in primates: a cortical expansion in toothed whales by the late Eocene (in parallel with Eocene primates); another in oceanic dolphins during the middle-to-late Miocene (in parallel with monkeys). In contrast, cortical expansion in other large-cortex mammals, such as ungulates and carnivores, had a different, mostly later time course. Like primates, several carnivore lineages developed a relatively large cortex independently. In mammals, a larger brain almost always resulted from cortical expansion, but there were exceptions. |
format |
Book Part |
author |
Wise, Steven P. |
spellingShingle |
Wise, Steven P. Other orders |
author_facet |
Wise, Steven P. |
author_sort |
Wise, Steven P. |
title |
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title_full |
Other orders |
title_fullStr |
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title_full_unstemmed |
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title_sort |
other orders |
publisher |
Oxford University PressOxford |
publishDate |
2023 |
url |
http://dx.doi.org/10.1093/oso/9780192868398.003.0010 https://academic.oup.com/book/chapter-pdf/58168958/oso-9780192868398-chapter-10.pdf |
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toothed whales |
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toothed whales |
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Cortical Evolution in Primates page 160-176 ISBN 019286839X 9780192868398 9780191964336 |
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https://doi.org/10.1093/oso/9780192868398.003.0010 |
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160 |
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176 |
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1802650716455567360 |