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: Up to‭ ‬9‭ ‬meters long.
Known locations: Argentina,‭ ‬Rio Negro Province‭ ‬-‭ ‬Allen Formation.
Time period: Campanian/Maastrichtian of the Cretaceous.
Fossil representation: Several individuals of varying ages from juvenile to adult.

       A late Cretaceous era hadrosaur,‭ ‬Willinakaqe was described from a collection of disarticulated remains of several individuals.‭ ‬Although no single individual was complete,‭ ‬the numbers of Willinakaqe involved at least allowed missing elements of one individual to be covered by others,‭ ‬allowing for a more confident reconstruction of this dinosaur.‭ ‬Willinakaqe has been classified as a saurolophine hadrosaurid because of the lack of a hollow head crest,‭ ‬something that is the hallmark of the lambeosaurine hadrosaurids.‭ ‬This ties in with the common observation that as the Cretaceous period came to a close,‭ ‬most lambeosaurine hadrosaurids had been replaced by saurolophine hadrosaurids.‭ ‬Willinakaqe is generally considered to be closely related to Secernosaurus,‭ ‬the first hadrosaurid dinosaur to be identified as living in South America.
       As a relatively large herbivorous dinosaur,‭ ‬Willinakaqe would have been a viable target for large late Cretaceous period predators such as Carnotaurus.

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.‭


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