Word: optatum
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Dates: during 2004-2004
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...team is patient with neophytes fascinated by Riversleigh's extinct megafauna (though many of these creatures were known already from deposits elsewhere in Australia), among them the rhinoceros-sized Diprotodon optatum, distantly related to the wombat; and the 3-m tall, 400-kg flightless bird Dromornis stirtoni, which had a beak large and sharp enough to tear the flesh off a kangaroo, if not as a predator then as a scavenger. Extracting the fossils of such creatures is harder than finding them. These palaeontologists aren't eggheads: they spend seven hours each day under a scorching sun levering boulders...
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