Premise: Haplocyonoides is an extinct genus of terrestrial carnivores belonging to the suborder Caniformia, family Amphicyonidae ("bear dog"), and which inhabited Europe from the Early Miocene subepoch (20 Mya)—(16.9 Mya). "Haplocyonoides" existed for approximately .
Hypothesis: Scientists believe Haplocyonoides existed for nearly a thousand years before becoming extinct.