Taipan process on the arch of the palate, which Kinghorn noted separated the genus from all other elapids. The three known species are: the coastal taipan ("Oxyuranus scutellatus"), the inland taipan ("Oxyuranus microlepidotus"), and a recently discovered third species, the Central Ranges taipan ("Oxyuranus temporalis"). The coastal taipan has two subspecies: the coastal taipan ("O. s. scutellatus"), found along the northeastern coast of Queensland, and the Papuan taipan ("O. s. canni"), found on the southern coast of Papua New Guinea. A 2016 genetic analysis showed that the speckled brown snake was an early offshoot of a lineage giving rise to the
Taipan taipans, with the central ranges taipan being an offshoot of the common ancestor of the inland and coastal taipans. Their diets consist primarily of small mammals, especially rats and bandicoots. Species of this genus possess highly neurotoxic venom with some other toxic constituents that have multiple effects on victims. The venom is known to paralyse the victim's nervous system and clot the blood, which then blocks blood vessels and uses up clotting factors. Members of this genus are considered to be among the most venomous land snakes based on their murine , an indicator of the toxicity on mice. The