Paleocene

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(Mammals)
(Archosauromorphs)
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##[[Neoaves]]
##[[Neoaves]]
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Particularly the Neoaves underwent a spectacular radiation, most probably in the Paleocene, although it is not clear if some of the diversity may stem form before K-T. The Paleocene carnivorous mammals of Laurasia had to share their world with giant flightless birds of prey like ''Diatryma'' and its cousins (order Diatrymiformes), which appear suddenly during the late Paleocene and continue through to the Middle Eocene.  Standing 2 meters or more in height and weighing in at around 200 kg, these large-beaked birds were the biggest and fiercest animals on land for some five or ten million years.  In South America similar giant predatory birds, the phorusrhacids, are known from the Eocene but most probably likewise evolved during the Paleocene. These great birds were the last successors of the mighty theropod dinosaurs of the Mesozoic.
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Particularly the Neoaves underwent a spectacular radiation, most probably in the Paleocene, although it is not clear if some of the diversity may stem form before K-T. The Paleocene carnivorous mammals of Laurasia had to share their world with giant flightless birds of prey like ''Diatryma'' and its cousins (order Diatrymiformes), which appear suddenly during the late Paleocene and continue through to the Middle Eocene.  Standing 2 meters or more in height and weighing in at around 200 kg, these large-beaked birds were the biggest and fiercest animals on land for some five or ten million years.  In South America similar giant predatory birds, the phorusrhacids, are known from the Eocene but most probably likewise evolved during the Paleocene. These great birds were the last successors of the mighty theropod dinosaurs of the Mesozoic. Also, penguins evolved by 60-64 [[Ma]].
==Links==
==Links==

Revision as of 21:37, 23 November 2013

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