Inland taipan Wombey argued that "Parademansia microlepidotus" belongs to a distinct genus, and this was also the opinion of Harold Cogger. Covacevich, McDowell, Tanner & Mengden (1981) successfully argued, by comparing anatomical features, chromosomes and behaviour of the two species then known as "Oxyuranus scutellatus" (taipan) and "Parademansia microlepidota", that they belonged in a single genus. "Oxyuranus" (1923), the more senior name, was adopted for the combined genus. "Oxyuranus microlepidotus" has been the fierce snake's binomial name since the early 1980s. The generic name, "Oxyuranus", means "oxus" (Greek) "sharp pointed", "oura" (Greek) "tail"; "-anus" (Latin) "belonging to", and refers to the inland
Coastal taipan is exceeded in length among venomous snakes only by the Asiatic king cobra, African black mamba, and genus "Lachesis" (bushmasters) of the American neotropics. The head of the coastal taipan is long and narrow like that of the African black mamba ("Dendroaspis polylepis"), but without the "coffin" shape. The two species are strongly convergent in several aspects of morphology, ecology and behaviour. "O. scutellatus" has an angular brow and is lighter-coloured on the face. The body is slender and colouration can vary. It is often uniformly light olive or reddish-brown in colour, but some specimens may be dark gray to