"Astroconodon" occurs in several fossil formations, most depicting wetland and delta environments.In both the Antlers Formation and the Cedar Mountain Formation it occurs alongside iconic dinosaurs such as "Tenontosaurus" and "Deinonychus", and in former it co-exists with a wide variety of other mammals including two other eutriconodonts, the considerably larger "Jugulator amplissimus" and closely related "Corviconodon utahensis", as well as many multituberculates and therians.