LATE PALEOZOIC FUSULINOIDEAN GIGANTISM DRIVEN BY ATMOSPHERIC HYPEROXIA
نویسندگان
چکیده
منابع مشابه
Late paleozoic fusulinoidean gigantism driven by atmospheric hyperoxia.
Atmospheric hyperoxia, with pO(2) in excess of 30%, has long been hypothesized to account for late Paleozoic (360-250 million years ago) gigantism in numerous higher taxa. However, this hypothesis has not been evaluated statistically because comprehensive size data have not been compiled previously at sufficient temporal resolution to permit quantitative analysis. In this study, we test the hy...
متن کاملShifts in late Paleozoic atmospheric circulation over western equatorial Pangea: Insights from pedogenic mineral d18O compositions
The d18O values of pedogenic calcites, phyllosilicates, and iron (oxyhydr)oxides from fossil soils throughout the southwestern United States show systematic paleolatitudinal and temporal trends that indicate a significant change in soil moisture conditions and atmospheric circulation patterns over southwestern Euramerica throughout latest Pennsylvanian and Early Permian time. A progressive depl...
متن کاملThe evolutionary physiology of animal flight: paleobiological and present perspectives.
Recent geophysical analyses suggest the presence of a late Paleozoic oxygen pulse beginning in the late Devonian and continuing through to the late Carboniferous. During this period, plant terrestrialization and global carbon deposition resulted in a dramatic increase in atmospheric oxygen levels, ultimately yielding concentrations potentially as high as 35% relative to the contemporary value o...
متن کاملChondrites isp. Indicating Late Paleozoic Atmospheric Anoxia in Eastern Peninsular India
Rhythmic sandstone-mudstone-coal succession of the Barakar Formation (early Permian) manifests a transition from lower braided-fluvial to upper tide-wave influenced, estuarine setting. Monospecific assemblage of marine trace fossil Chondrites isp. in contemporaneous claystone beds in the upper Barakar succession from two Gondwana basins (namely, the Raniganj Basin and the Talchir Basin) in east...
متن کاملEccentricity-paced late Paleozoic climate change
Article history: Received 24 April 2011 Received in revised form 7 March 2012 Accepted 10 March 2012 Available online xxxx
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Evolution
سال: 2012
ISSN: 0014-3820
DOI: 10.1111/j.1558-5646.2012.01626.x