In many later publications the specific name is misspelled "bonarelli", with a single "i", from the incorrect assumption it would be derived from a Latinised "Bonarell~ius". The fossil, found near the Lago Colhué Huapi in Chubut, was eventually described by Friedrich von Huene in 1929, but it has since been lost.
In later publications, the scientific name is frequently misspelled as "bonarelli" with a single "i", due to an erroneous belief that it originated from a Latinized version of "Bonarell~ius". The fossil, discovered near Lago Colhué Huapi in Chubut, was initially described by Friedrich von Huene in 1929, but has since been lost.