(Southern duck mimic).
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).
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.
late Cretaceous era hadrosaur,
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
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close, most lambeosaurine hadrosaurids had been replaced by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.
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.