1. Conodonta;Aldridge,1993
2. The Late Triassic–Hettangian bivalve turnover in Lombardy (Southern Alps);Allasinaz;Riv. Ital. Paleontol. Stratigr.,1992
3. Extraterrestrial cause for the Cretaceous–Tertiary extinction;Alvarez;Science,1980
4. Late Triassic ecosystems of the Molteno lower Elliot biome of southern Africa;Anderson;Palaeontology,1998
5. Fossil plants and the Triassic–Jurassic boundary;Ash,1986