TY  - SER
AU  - Wauthoz,Bastien
AU  - Dorning,Ken
AU  - Le Hérissé,Alain
TI  - Crassiangulina variacornuta sp: nov from the late Llandovery and its bearing on silurian and Devonian acritarch taxonomy
N1  - bibliogr. p. 80-81
ER  -