A very large pterosaur (MN 6594-V) from the Romualdo Formation (Aptian/Albian), Santana Group, Araripe Basin, is described. The specimen is referred to Tropeognathus cf. T. mesembrinus mainly due to the presence of a low and blunt frontoparietal crest, the comparatively low number of teeth and the inclined dorsal part of the occipital region. Two distinct wingspan measurements for pterosaurs are introduced: the maximized wingspan (maxws), which essentially consists of doubling the addition of all wing elements and the length of the scapula or the coracoid (the smaller of the two), and the normal wingspan (nws), which applies a reducing factor (rfc) to the maximized wingspan to account for the natural flexures of the wing. The rfc suggested for pteranodontoids is 5%. In the case of MN 6594-V, the maxws and nws are 8.70 m and 8.26 m, respectively, making it the largest pterosaur recovered from Gondwana so far. The distal end of a larger humerus (MCT 1838-R) and a partial wing (MPSC R 1395) are also described showing that large to giant flying reptiles formed a significant part of the pterosaur fauna from the Romualdo Formation. Lastly, some comments on the nomenclatural stability of the Santana deposits are presented.

ResumoFundado em 1985, o Museu de Paleontologia em Santana do Cariri (MPSC) tem armazenado fósseis provenientes da Bacia do Araripe, com o objetivo de guardar e proteger espécimes importantes para a ciência. Os fósseis que compõem o acervo são, por exemplo, peixes, plantas, tartarugas, crocodilomorfos, artrópode, crustáceos, anuros, conchas, bivalves, dinossauros e pterossauros. Este trabalho é a continuação de outro que foi iniciado há 13 anos, desde então, a coleção de pterossauros aumentou consideravelmente, e hoje conta com 134 espécimes, dotados de material pós-craniano (155), crânio (19), vértebra cervical (5), fragmentos desconhecidos (2), fósseis adulterados (8) e mais 38 peças que foram classificadas erroneamente como pterossauros. Alguns espécimes de pterossauros se encontram sob empréstimoem outras instituições ou em preparação no Laboratório de Paleontologia da Universidade Regional do Cariri (LPU).Palavras-chave: Pterossauria. MPSC. Bacia do Araripe. Cretáceo. UNVEILING THE PTEROSAUR'S COLLECTION OF MUSEU DE PALEONTOLOGIA DA UNIVERSIDADE REGIONAL DO CARIRI AbstractFounded in 1985, the Museu de Paleontologiaem Santana do Cariri (MPSC) has stored fossiliferous beings from Araripe Basin, with objectives of keep and protect important specimens to the science. The fossils compose the collection are, for example, fishes, plants, turtles, crocodylomorphs, arthropod, crustaceans, anurans, shells and bivalves, dinosaurs and pterosaurs. This study is continuation of other was started 13 years ago, since, the pterosaur's collection increased considerably, and today have 134 specimens, endowed of (155) postcranials material, (19) cranials, (5) cervical vertebra, (2) unknow fragments, (8) fossil adulterateds and 38 pieces were erroneously classificated as pterosaurs. Some species of pterosaurs are on loan or in preparation in Laboratório de Paleontologia da URCA (LPU).

No abstract