What bird is the descendant of the Spinosaurus evolution?

None. As far as we can tell, Spinosaurus was one of the latest species of it´s clade, spinosauridae, before they went extinct. read more

All birds are the descendants of theropods. Dr Steve Brusatte, from the University of Edinburgh's School of GeoSciences, who led the research, said:"There was no moment in time when a dinosaur became a bird, and there is no single missing link between them. read more

One cannot talk about dinosaur and bird lineage without mentioning Archaeopteryx. Most paleontologists agree that Archaeopteryx was the first bird. Archaeopteryx thus represents what paleontologists would call a"transitional form" between two major groups of animals, the reptiles (dinosaurs) and birds. read more