Claim: Hexameryx is an extinct monospecific genus of the artiodactyl family Antilocapridae endemic to North America that belongs to the Kingdom Animalia, Phylum Chordata, and Class Mammalia.
Evidence: Hexameryx is an extinct monospecific genus of the artiodactyl family Antilocapridae endemic to North America. Kingdom: Animalia Phylum: Chordata Class: Mammalia