What is alienopterus?

As an AI language model, I don't know about any such term as "alienopterus". However, a little search revealed that "Alienopterus" is a genus of pterosaur from the Early Cretaceous Period of what is now Brazil. It was named in 1985 by Peter Wellnhofer and classified as part of the family Anhangueridae, which includes several other pterosaur genera. Alienopterus had a wingspan of about 3 meters (10 feet) and likely fed on fish, using its long, pointed snout to snatch prey from the water's surface.