M. Philippe et al., PRESIDENT-HEAD, SNOW-ISLAND, SOUTH-SHETLA ND, A KEY-POINT FOR ANTARCTICA MESOZOIC PALEOBOTANY, Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 321(11), 1995, pp. 1055-1061
New finds make the President Head Flora, Snow Island, South Shetland,
one of the richest of the Mesozoic of Antarctica. It is Valanginian-Ha
uterivian and not Jurassic in age. This flora is a key to the biostrat
igraphy of the continent.