The type species, D. amazighi, is known from the Ksar Metlili Formation in the Atlas Mountains, dating to the Berriasian.

D. indicus is known from a single lower molar tooth from the Kota Formation, dating to the Hettangian-Pliensbachian.

[2] Due to the large temporal distance between both species, different environments and general incompleteness of the Indian material, there is also doubt as to whereas D. indicus is closely related to D. amazighi.

[2] As it was found in relative abundance in marine deposits, D. amazighi, like the contemporary Ichthyoconodon, has been suggested to be an aquatic piscivore.

Posterior analysis have shown a lack of precise equivalency between eutriconodont molars and those of therian mammals, rending this assessment as a fish-eater cautious,[2] but the high state of preservation of the animal's teeth indicates that it died in situ or nearby, in open waters.