Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 2 of 2 for “"Drumian Stage"”.
-
High-Resolution Correlation Using Geophysical and Geochemical Methods on Three Cambrian Drumian Marine Sedimentary Successions in The House Range Embayment, Western Laurentia
… and Point (GSSP) of the base of the Cambrian Drumian Stage was defined at 62 m above the base of the Wheeler formation, at the First Appearance Datum (FAD) of Ptychagnostus atavus (P. atavus), and at 10 meter below the DrumIan Carbon isotope Excursion (DICE) on the Stratotype Ridge in the Drum …
-
Middle Cambrian linguliformean brachiopods of the Pika and Sullivan formations, southern Canadian Rocky Mountains, Alberta, Canada
… found in the Bolaspidella trilobite Biozone (Drumian Stage) of the Pika Formation. The assemblage from the Cedaria trilobite Biozone (Guzhangian Stage) of the Sullivan Formation includes the obolids Dicellomus politus Hall 1871, D. cf. D. amblia Bell 1944, D. appalachia Walcott 1905, and D. …