Santanachelys gaffneyi is an extinct species of sea turtle. It is the only species in the genus Santanachelys, which itself is a member of the extinct family Protostegidae. The species was first descr

Bakiribu is an extinct animal genus known from the Early Cretaceous Romualdo Formation of Brazil. The genus contains a single species, Bakiribu waridza. It was initially described as a ctenochasmatid