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RE: Late Cretaceous Giant Ceratopsians and Hadrosaurs
Tim Donovan <email@example.com> wrote:
It is interesting that the bulk of North American late K titanosaur remains
are from the Javelina but the only known late K NA titanosaur armor scute
is from the underlying Aguja, which suggests the early immigrants were
armored saltasaurines but the later Alamosaurus was unarmored.
The late K titanosaurs of N. America are known from very incomplete
specimens. The absence of scutes could be taphonomic. In general, most
sauropod skeletons do not include skulls, but we know they had heads.
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