Name: Willinakaqe ‭(‬Southern duck mimic‭)‬.
Phonetic: Wil-lin-a-kak-e.
Named By: Rubin D.‭ ‬Juarez Valieri,‭ ‬Jose A.‭ ‬Haro,‭ ‬Lucas E.‭ ‬Fiorelli‭ & ‬Jorge O.‭ ‬Calvo‭ ‬-‭ ‬2010.‭
Classification: Chordata,‭ ‬Reptilia,‭ ‬Dinosauria,‭ ‬Ornithischia,‭ ‬Ornithopoda,‭ ‬Hadrosauridae,‭ ‬Saurolophinae,‭ ‬Kritosaurini.
Species: W.‭ ‬salitralensis‭ (‬type‭)‬.
Diet: Herbivore.
Size: Uncertain,‭ ‬most previous size estimates for Willinakaqe are based upon fossils no longer attributed to the genus.
Known locations: Argentina,‭ ‬Rio Negro Province‭ ‬-‭ ‬Allen Formation.
Time period: Campanian/Maastrichtian of the Cretaceous.
Fossil representation: Partial remains.

       When Willinakaqe was first described it was from a collection of fossils from various different individual dinosaurs.‭ ‬With the holotype bones of Willinakaqe weathered,‭ ‬the other fossil bones were used as stand in to get a more complete picture of this dinosaur.‭ ‬This involved establishing what is known as a paratype,‭ ‬a more complete and better preserved example of the original holotype specimen.
       This was all fine until a later analysis of the Willinakaqe fossils in‭ ‬2016,‭ ‬came to the conclusion that the fossils probably do not represent the same genus of‭ ‬hadrosaurid‭ ‬dinosaur.‭ ‬This includes the paratype fossils which‭ ‬have now been renamed s belonging to their own distinct genus,‭ ‬Bonapartesaurus.‭ ‬This now leaves the holotype fossils of Willinakaqe,‭ ‬which are poorly preserved,‭ ‬so much so that they are also considered to not be clearly diagnostic enough to identify further fossils.
       Willinakaqe as a valid genus of dinosaur now faces an uncertain future.

Further reading
A new hadrosauroid‭ (‬Dinosauria:‭ ‬Ornithopoda‭) ‬from the Allen Formation‭ (‬Late Cretaceous‭) ‬of Patagonia,‭ ‬Argentina, Rubin D.‭ ‬Juarez Valieri,‭ ‬Jose A.‭ ‬Haro,‭ ‬Lucas E.‭ ‬Fiorelli‭ & ‬Jorge O.‭ ‬Calvo‭ ‬-‭ ‬2010.‭
-‭ ‬Revisiting the hadrosaurid diversity of the Allen Fm.:‭ ‬Re-evaluation of the taxonomic validity of Willinakaqe salitralensis‭ (‬Ornithopoda,‭ ‬Hadrosauridae‭) ‬from Salitral Moreno,‭ ‬Río Negro Province,‭ ‬Argentina.‭ ‬-‭ ‬Ameghiniana.‭ ‬53‭ (‬2‭)‬:‭ ‬231‭–‬237.‭ ‬-‭ ‬Penélope Cruzado Caballero‭ & ‬Rodolfo Anibal Coria‭ ‬– 2016.


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