All abstracts by Richard Twitchett at Goldschmidt 2007
| (2007) Significance of Biomarkers for P/T and F/F Mass Extinctions
Grice K, Nabbefeld B, Maslen E, Summons R, Twitchett R, Turgeon S, Algeo T & Bötccher M |
| (2007) D/H of Kerogen Across the Permian/Triassic (P/Tr) Boundary
Nabbefeld B, Grice K, Twitchett R, Schimmelmann A & Sauer P |