1) Extinct flightless bird
Found on
https://www.crosswordclues.com/clue/potamornis
Potamornis is a prehistoric bird genus that dated back to the late Maastrichtian age of the late Cretaceous period. Its scrappy remains were found in the Lance Formation at Buck Creek, USA, and additional possible remains were found in the upper Hell Creek Formation of Montana, dated to the Danian age of the Paleogene period, though these may have...
Found on
http://en.wikipedia.org/wiki/Potamornis
No exact match found.
