claim: Yugoslavia failed to exist during most of the 20th century.
evidence: The fourhorn sculpin -LRB- Myoxocephalus quadricornis -RRB- is a species of fish in the Cottidae family .. Cottidae. Cottidae. Myoxocephalus. Myoxocephalus. fish. fish. It is a demersal fish distributed mainly in brackish arctic coastal waters in Canada , Greenland , Russia , and Alaska , and also as a relict in the boreal Baltic Sea .. fish. fish. demersal fish. demersal fish. brackish. brackish. arctic. arctic. Canada. Canada. Greenland. Greenland. Russia. Russia. Alaska. Alaska. boreal. boreal ecosystem. Baltic Sea. Baltic Sea. There are also freshwater populations in the lakes of Norway , Sweden , Finland and Karelia -LRB- NW Russia -RRB- and in Arctic Canada -LRB- Nunavut and Northwest Territories -RRB- .. Canada. Canada. Russia. Russia. Norway. Norway. Sweden. Sweden. Finland. Finland. Karelia. Karelia. Nunavut. Nunavut. Northwest Territories. Northwest Territories. The deepwater sculpin Myoxocephalus thompsonii of continental North American freshwater lakes -LRB- e.g. , the Great Lakes -RRB- is closely related to the fourhorn sculpin and alternatively considered as a subspecies of the latter , Myoxocephalus quadricornis thompsonii .. Myoxocephalus. Myoxocephalus. deepwater sculpin. deepwater sculpin. Great Lakes. Great Lakes