page_title: Tasmaniosaurus
section_title: Other bones
hierarchical_section_title: Tasmaniosaurus / Description / Other bones
caption_attribution_description: English: Figure 18. Comparisons of basal archosauromorph interclavicles in dorsal view. A, Tasmaniosaurus triassicus (UTGD 54655); B, Prolacerta broomi (BP/1/2675); and C, Proterosuchus fergusi (GHG 363). Abbreviations: lp, lateral process; n, median notch; pp, posterior process; tc, transverse compression; te, transverse expansion. Scale bars equal 1 cm.
context_page_description: Tasmaniosaurus is an extinct genus of archosauromorph reptile known from the Knocklofty Formation of West Hobart, Tasmania, Australia. The type species is T. triassicus. This genus is notable not only due to being one of the most complete Australian Triassic reptiles known, but also due to being a very close relative of Archosauriformes. Once believed to be a proterosuchid, this taxon is now believed to have been intermediate between advanced non-archosauriform archosauromorphs such as Prolacerta, and basal archosauriforms such as Proterosuchus. Features traditionally used to define Archosauria and later Archosauriformes, such as the presence of an antorbital fenestra and serrated teeth, are now known to have evolved prior to those groups due to their presence in Tasmaniosaurus.
caption: The interclavicle of Tasmaniosaurus (A) compared to that of Prolacerta (B) and Proterosuchus (C).
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