Smithian (early Triassic) ammonoid faunas from northwestern Guangxi (South China): taxonomy and biochronology
The highly fossiliferous succession of Smithian (Early Triassic) ammonoids from northwestern Guangxi (South China) provides a key equatorial record, at the boundary between Tethys and Panthalassa. After the end-Permian extinction, ammonoids reached their first major diversity peak during Smithian times, coupled with a marked contrast in their latitudinal distribution. This monograph contains a part of the fundamental taxonomic and biostratigraphic data of a more comprehensive research project addressing patterns of recovery in time and space of Early Triassic ammonoids and other marine clades, in conjunction with global paleoceanographic and paleoclimatic changes.
What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
acicular carbonate cement Alaska Range Alaska USGS Mesozoic ammo ammonite fauna ammonite-bearing bed ammonites from USGS AMMONITES OF PALEOEQUATORIAL ammonoids Arctic Canada Tozer bivalves calities Canada Geological Survey cephalopods Chulitna fauna Chulitna terrane Confusion Range correlative faunas Dieneroceras knechti Hyatt diversity Early Triassic Smithian Elko County Ellesmere Island equatorial faunas Faunas from localities figures natural Geological Survey Professional Halfway River Hawley and Clark Hyatt and Smith Jones K. M. NICHOLS Kummel and Steele Lanceolites compactus Hyatt line x8 lithosphere lower Smithian Lower Triassic limestone Lower Triassic rocks Lower Triassic Smithian marine Lower Triassic megafossils Mesozoic locality M5027 Nevada North America North American craton northeastern British Columbia northern paleolatitudes PALEOEQUATORIAL AFFINITY paleogeographic Paleontology Paleozoic Paranannites PLATE red beds Silberling single bed Smithian ammonite south flank south-central Alaska species Survey Professional Paper Suture line xlO taxonomic trict U.S. Geological Survey Upper Chulitna district USGS Mesozoic locality USNM written commun