Canis apolloniensis is an extinct species of Canidae

Canidae

Canidae is the biological family of carnivorous and omnivorous mammals that includes wolves, foxes, jackals, coyotes, and domestic dogs. A member of this family is called a canid . The Canidae family is divided into two tribes: Canini and Vulpini...

 which was endemic to Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 and lived during the Early Pleistocene

Early Pleistocene

Calabrian is a subdivision of the Pleistocene Epoch of the Geologic time scale. ~1.8 Ma.—781,000 years ago ± 5,000 years, a period of ~.The end of the stage is defined by the last magnetic pole reversal and plunge in to an ice age and global drying possibly colder and drier than the late Miocene ...

 epoch from 1.81 Mya—781,000 years ago, existing for approximately ..

Canis apolloniensis was a short-lived species in geologic time when compared to other Canis species. It coexisted with the Eurasian Wolf

Eurasian Wolf

The Eurasian Wolf , also known as the, European, Common or Forest Wolf is a subspecies of grey wolf which has the largest range among wolf subspecies and is the most common in Europe and Asia, ranging through Mongolia, China, Russia, Scandinavia, Western Europe and the Himalayan Mountains...

 which appeared earlier at 3.4 Ma.

Canis apolloniensis was named by Koufos and Kostopoulos 1997. The only fossil reference comes from northern Greece

Greece

Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....