This group probably originated in the Moluccas, although dating their origins is complicated by the paucity of the fossil record. The absence of large placental predatory mammals east of Wallace's line may be partially responsible for the radiation of the V. prasinus group in the Australo-Papuan region.
The origin of this group is likely in the Moluccas, but pinpointing their exact origins is difficult due to a lack of fossil evidence. The absence of large placental predators east of Wallace's line may have contributed to the diversification of this group in the Australo-Papuan region.