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On Terror Birds & Teratorns

1) Are the terror birds really closely related to the seriemas of South America?
2) When & where did _Andalgalornis_, _Pelecyornis_, _Phorusrhacos_ & _Titanis_ live?
3) Did any terror birds survive until the Late Pleistocene?
4) Is _Titanis_ the only North American phorusrhacid?
5) Which teratorns survived until the Late Pleistocene?
6) Is the teratorn-as-giant-vulture hypothesis still accepted?
7) Did teratorns have bare necks, feathered necks or is it still unknown?
8) Finally, does anyone have a complete list of the species, distribution & time range of the phorusrhacids & teratornithids?

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