A. Soufiane et A. Achab, Upper Ordovician and Lower Silurian chitinozoans from central Nevada and Arctic Canada, REV PALAE P, 113(1-3), 2000, pp. 165-187
Late Ordovician and Early Silurian chitinozoans from the uppermost Vinini F
ormation, and the Hanson Creek Formation in central Nevada and the lower Ca
pe Phillips Formation, Cape Manning section, in Arctic Canada have been re-
investigated and a new chitinozoan biozonation is proposed. The Upper Ordov
ician of central Nevada can easily be correlated to that of Arctic Canada t
hrough the common occurrence of the Ordochitina nevadensis biozone in both
regions. No such correlation, however, is possible with the Late Ordovician
of Anticosti Island in eastern Canada because of the absence of the index
Upper Ordovician chitinozoan zonal species of central Nevada such as Belone
chitina tenuispinata sp. nov, Ordochitina nevadensis sp. nov. and Nevadachi
tina vininica gen. nov., sp, nov, in the former area.
One new genus, Nevadachitina, and nine new species, Eisenackitina ripae, Be
lonechitina martinica; Nevadachitina vininica, Nevadachitina praevininica,
Ordochitina nevadensis, Belonechitina tenuispinata, Belonechitina parvispin
ata, Tanuchitina laurentiana, Angochitina hansonica are described and illus
trated in this paper and four species are left in open nomenclature. (C) 20
00 Elsevier Science B.V. All rights reserved.