The other specimens were described by zoologists at the museum.

The first specimens were described in 1954, but it was not until over a decade later that the genus received its current name.

Five more specimens were later described, representing the majority of the skeleton.

Two much more complete specimens were described in the 1990s.

However specimen of this size have not been formally described in the literature.

The specimen was described as a new genus and species in 2012.

In fact the first definitive specimen was described from human subject in 1876.

In 2010, two new specimens were described, both of which preserved feather traces.

The first specimen was collected in the 1970s, and later described in 1983.

Their first specimens, from the Alice Springs area, were described in 1897.