Final answer:
Human fossils from Gran Dolina, dating to about 850,000 ya, are classified under the species Homo antecessor, which is one of the earliest known hominins in Europe.
Step-by-step explanation:
The human fossils from Gran Dolina, dating to about 850,000 years ago (ya), are placed within the species Homo antecessor. These specimens represent some of the oldest fossil evidence of the genus Homo in Europe. A significant site for these fossils is the Sima de los Huesos in the Sierra de Atapuerca region in Spain.
Homo antecessor is believed by some scientists to be the ancestor of Homo heidelbergensis and possibly related to Homo neanderthalensis. It is important to note that Homo habilis and Homo erectus are not the correct answers, as H. habilis dates back further and H. erectus is likely ancestral to H. heidelbergensis, which evolved later than the Gran Dolina fossils.