D. Vachard et M. Roche, LYSSAKID OXYHEXACTINES (HEXACTINELLIDA, S PONGIA) IN PALYNOLOGICAL PREPARATIONS OF THE RHAETIAN (UPPERMOST TRIASSIC) FROM EASTERN FRANCE, Geobios, 29(2), 1996, pp. 171-176
A taphocenosis with pyritized microscleres spicules of hexactinellid s
ponges, associated with acritarchs and dinoflagellate cysts, allows pr
ecise determination of biosedimentological conditions prevaling during
deposition of a facies of the Rhaetian Sandstones from the Paris Basi
n.