GalecyonGalecyon is an extinct genus of placental mammals from extinct order Hyaenodonta, that lived in Europe and North America during the early Eocene.DescriptionGalecyon had robust canines and short, deep jaws. Prior to 2015, little was known about its post-cranial skeleton. However, following the discovery of more complete fossils, it is now known to have been a primarily terrestrial animal weighing between, lacking the adaptations for climbing found in some of its close relatives.