In this study the Amata RS is allocated within the Frasnian
Quartzites, black schists with graptolites, sandstone, dolomites, blue limestone, sandy schists and ferruginous sandstone are the dominant forms, with ages ranging from the Ordovician to the Frasnian
(Heddebaut, 1975; Rat and Feuillee, 1971) (Fig.
100[degrees]C, with the maximum burial episodes between the Frasnian
and Lower Visean, in a time span of ca.
These are Petaloscorpio bureaui Kjellesvig-Waering, 1986 from the Frasnian
Escuminac Formation of Canada (Jeram 1996) and Hubeiscorpio gracilitarsus Walossek, Li & Brauckmann, 1990 from the Frasnian
of China (Walossek et al.
Depocentres were active at different times along the Lennard Shelf and Fitzroy Graben, with pronounced siliciclastic pulses occurring through the late Frasnian
Ooid zonation as indication for environmental conditions in a Givetian- Frasnian
carbonate shelf- slope transition.
On the colour of the Giventian and lower Frasnian
terrigenous sediments of the central Baltic region.
The post-Acadian succession in southern Gaspe starts with the Frasnian
Miguasha Group (Brideaux and Radforth 1970; Hesse and Sawh 1992; Prichonnet et al.
The die-off climaxed at the end of the period's Frasnian
stage, which lasted from around 385 million to 375 million years ago.
In 2009 Szrek also identified the same species from the so-called Kellwasser horizon (Plucki locality), uppermost Frasnian
All of the rediscovered bones originally came from a Scottish site dating back to the Frasnian
stage of the late Devonian period, about 370 million years ago.
deposits are mostly carbonates with clays and evaporates in the upper part.