Citation: Xp. Dong et Sm. Bergstrom, Middle and Upper Cambrian protoconodonts and paraconodonts from Hunan, South China, PALAEONTOL, 44, 2001, pp. 949-985
Citation: Dr. Kolata et al., The Ordovician Sebree Trough: An oceanic passage to the Midcontinent United States, GEOL S AM B, 113(8), 2001, pp. 1067-1078
Authors:
Bergstrom, SM
Finney, SC
Xu, C
Palsson, C
Wang, ZH
Grahn, Y
Citation: Sm. Bergstrom et al., A proposed global boundary stratotype for the base of the Upper Series of the Ordovician System: The Fagelsang section, Scania, southern Sweden, EPISODES, 23(2), 2000, pp. 102-109
Authors:
Bergstrom, SM
Huff, WD
Koren', T
Larsson, K
Ahlberg, P
Kolata, DR
Citation: Sm. Bergstrom et al., The 1997 core drilling through Ordovician and Silurian strata at Rostanga,S. Sweden: Preliminary stratigraphic assessment and regional comparison, GFF, 121, 1999, pp. 127-135
Authors:
Lehnert, O
Bergstrom, SM
Benedetto, JL
Vaccari, NE
Citation: O. Lehnert et al., First record of Lower Silurian conodonts from South America: biostratigraphic and palaeobiogeographic implications of Llandovery conodonts in the Precordillera of Argentina, GEOL MAG, 136(2), 1999, pp. 119-131
Citation: Sm. Bergstrom et al., Early Silurian (Llandoverian) K-bentonites discovered in the southern Appalachian thrust belts, eastern USA: Stratigraphy, geochemistry, and tectonomagmatic and paleogeographic implications, GFF, 120, 1998, pp. 149-158
Authors:
Huff, WD
Bergstrom, SM
Kolata, DR
Cingolani, CA
Astini, RA
Citation: Wd. Huff et al., Ordovician K-bentonites in the Argentine Precordillera: relations to Gondwana margin evolution, GEOL SOC SP, (142), 1998, pp. 107-126