Cambrian Strata of Northeastern Iowa

Geologic Overview of the Paleozoic Plateau Region of Northeastern Iowa

Carbonates in Skeleton-Poor Seas: New Insights from Cambrian and Ordovician Strata of Laurentia

Calcareous skeletons evolved as part of the greater Ediacaran/Cambrian diversification of marine animals; however, skeletons did not become permanent, globally important sources of carbonate sediment until the Ordovician radiation. Representative carbonate facies in a Series 3 Cambrian to Tremadocian succession from western Newfoundland and Ordovician successions from the Ibex area, Utah, show ...

PALYNOSTRATIGRAPHY AND PALAEOBIOGEOGRAPHY OF LOWER PALAEOZOIC STRATA IN THE GHELLI AREA, NORTHEASTERN ALBORZ RANGE OF IRAN (KOPET-DAGH REGION)

First ediacaran fauna occurrence in northeastern Brazil (jaibaras basin, ?ediacaran-cambrian): preliminary results and regional correlation.

This study reports the first known occurrence of the Ediacaran fauna in northeastern Brazil (at Pacujá Municipality, northwestern state of Ceará) and presents preliminary interpretations of its significance. Regional correlation indicates that the fossils originated in the Jaibaras Basin and that they may represent a new geological system. The depositional environment can be attributed to a flu...

Reevaluating Evidence for the Pre-lllinoian Entrenchment of Northeastern Iowa River Valleys