| A platypussary displaying the delicate and unique monotreme was the central feature of the section. |
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| Like the eggs of birds, monotreme eggs are incubated and hatched outside the body of the mother. |
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| Aquatically adapted platypus-like monotremes probably evolved from a more generalized terrestrial monotreme. |
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| The duckbill platypus is a current member of the ancient monotreme group. |
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| Dated to 112 million years ago, the fossil was by far the oldest monotreme specimen discovered to date. |
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| The sparse fossil record of the monotreme duck-billed platypus was greatly extended back in time when a misidentified specimen was reidentified. |
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| None of the theories of monotreme relationships has been universally accepted, although the subject is of great interest to scientists who study mammalian evolution. |
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| However, the five species of monotreme, the platypus and the four species of echidna, lay eggs. |
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| Here we have an oviparous mammal that is also an insectivore and a monotreme. |
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| But the latest find contradicts that theory because it is much bigger than older, toothed incarnations of the mysterious monotreme. |
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| In the same year, the Argentinian paleontologist Rosendo Pascual announced evidence of a 63-million-year old monotreme from Patagonia in southern Argentina. |
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| The echidna is a monotreme, which is the extremely small subset of oviparous mammals. |
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| An egg-laying monotreme, the platypus is found in the fresh water lakes and streams of eastern Australia where it forages for prey with a highly sensitive bird-like bill. |
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