'Following the paper’s publication in Cretaceous Research, an online campaign with the hashtag #UbirajaraBelongsToBrazil called for the specimen’s return, citing palaeontological colonialism, in which scientists from wealthy nations take fossils from low- and middle-income nations. Because it is the only known specimen of its kind and is well preserved, researchers consider the Ubirajara fossil to be a holotype — a gold-standard specimen used to describe a new species'