Complex sentence: "Archaeoraptor" is the generic name informally assigned in 1999 to a fossil from China in an article published in "National Geographic" magazine, which claimed it was a "missing link" between birds and terrestrial theropod dinosaurs.
Split into simpler sentences: Archaeoraptor is the generic name informally assigned in 1999 to a fossil from China in an article published in "National Geographic"magazine. The magazine claimed that the fossil was a "missing link" between birds and terrestrial theropod dinosaurs.