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Topic: Asselian

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Coleoptera : History The most ancient discoveries of beetles are indicated for the deposits of the Asselian layer of Niedermoschel locality in the vicinity of Mainz, Germany (Addresses of localities are given in the list of localities of fossil beetles), of the most ancient layer of the Permian, in Germany (Huerschemeyer, 1999). Older beetle fossils have been found in the deposits of the Asselian (291.5 - 288.5 million years ago) layer of Niedermoschel near Mainz, Germany. Apart from that the study of early stages of the evolution of beetles is hampered because of the two groups that are not related but are very similar to beetles in the structure of elytra of insects - Protelytroptera and some cockroaches. www.coleoptera.org /p1869.htm

showTextBody.cfm?desc_id=1756 Fragmented and abraded fusuline debris from the limestone are preliminarily assessed an upper Asselian age. Fragmented and abraded fusuline debris of the upper Asselian were identified from the upper part of the clastic limestone succession. According to these authors, the limestone is considered to be mostly referable to as Bashkirian to Moscovian and much less commonly the Gzhelian to Asselian. cordlink.gsc.nrcan.gc.ca /dev_cordlink2000/English/Browse/showTextBody.cfm?desc_id=1756

www.myriapoda.org The millipede suborder Arthropleurida is known from the Carboniferous Visean age to the Asselian age of the Permian (Ryan, 1986). www.myriapoda.org /diplopoda/millipede_fossils.html

Journal of Paleontology: Biostratigraphy and evolution of Late Carboniferous and Early Permian smaller foraminifers from the Barents Sea (offshore Arctic Norway) The palaeotextulariid Cribrogenerina gigas occurs in the Canadian Arctic in Asselian and Sakmarian strata (Pinard, 1989) and previously was considered a strictly Permian form (Loeblich and Tappan, 1988). We are unable at this time to suggest potentially useful taxa for internal subdivisions within the Asselian Stage, or for identifying Asselian-Sakmarian and Sakmarian-Artinskian stadial boundaries. These considerations notwithstanding, it is possible to devise a working biostratigraphic model for at least the Kasimovian through Asselian part of the studied interval (Figure 4). www.findarticles.com /p/articles/mi_qa3790/is_199709/ai_n8780203/pg_3

IngentaConnect Early Permian (Asselian) brachiopods from Karakorum (Pakistan) an... The results suggest the occurrence of a single biotic province during the Asselian, the Indoralian Province, embracing all the faunal stations examined, as a consequence of the global cold phase related to the last pulse of the Gondwanan glaciation. The faunal succession of Karakorum records a significant biotic change from the Asselian to the Sakmarian, a shift in diversity and composition that is also recorded along most of the Gondwanan margin and Peri-Gondwanan regions and that should be related to a major climatic change: the end of the Gondwanan glaciation. Early Permian (Asselian) brachiopods from Karakorum (Pakistan) and their palaeobiogeographical significance www.ingentaconnect.com /content/bpl/pala/2005/00000048/00000001/art00005

Palaeos Paleozoic: Permian: The Asselian Age GeoWhen Database - Asselian: GeoWhen's usual concise and authoritative placement of the age in geochronological context. The Asselian Age of the Cisuralian Epoch (Early Permian): 295 to 299 million years ago Life in the Asselian times had not changed much from the latest Carboniferous. www.palaeos.com /Paleozoic/Permian/Asselian.htm

Early Permian (Asselian) ammonoids from the Hare Fiord Formation, northern Ellesmere Island -- Nassichuk and Spinosa 46 (4): 536 -- Journal of Paleontology Early Permian (Asselian) ammonoids from the Hare Fiord Formation, northern Ellesmere Island -- Nassichuk and Spinosa 46 (4): 536 -- Journal of Paleontology Early Permian (Asselian) ammonoids from the Hare Fiord Formation, northern Ellesmere Island jpaleontol.geoscienceworld.org /cgi/content/abstract/46/4/536

GeoWhen Database - Asselian This page was last updated on Tuesday, January 18, 2005. www.stratigraphy.org /geowhen/stages/Asselian.html

EVIDENCE FOR A ROBUST CO2- CLIMATE LINK DURING THE LATE PALEOZOIC GONDWANAN ICE AGE Moderate latest Carboniferous CO levels were coincident with elevated mean annual surface temperatures and intensified precipitation during the latest Carboniferous to earliest Permian (Asselian). estimates suggest that minimum values similar to present-day CO levels were reached during the latest Asselian and earliest Sakmarian after dropping from moderate levels (>500 to 1200 ppmv) in the latest Carboniferous. gsa.confex.com /gsa/2004AM/finalprogram/abstract_80813.htm

Upper Missourian-lower Wolfcampian (upper Kasimovian-lower Asselian) conodont biostratigraphy of the Midcontinent, U.S.A. -- Ritter 69 (6): 1139 -- Journal of Paleontology Upper Missourian-lower Wolfcampian (upper Kasimovian-lower Asselian) conodont biostratigraphy of the Midcontinent, U.S.A. -- Ritter 69 (6): 1139 -- Journal of Paleontology Upper Missourian-lower Wolfcampian (upper Kasimovian-lower Asselian) conodont biostratigraphy of the Midcontinent, U.S.A. Scott M. Ritter jpaleontol.geoscienceworld.org /cgi/content/abstract/69/6/1139

References: FUSULINID SUCCESSION FROM THE MIDDLE-UPPER CARBONIFEROUS BOUNDARY BEDS ON SPITSBERGEN, ARCTIC NORWAY The fusulinids of Upper Carboniferous and Asselian of Lower Permian of the Southern Urals, p. www.paleo.erdw.ethz.ch /1999_1/fusulinid/refer.htm

cqsarticle1.htm The 'early' Permian Cisuralian subperiod incorporates the stages Asselian, Sakmarian, Artinskian and Kungurian. The Subcommission on Permian Stratigraphy under ICS (see also Jin Yugan in number 28, June 1996 of the Subcommission's newsletter Permophiles) is refining a proposal for Permian stage and series classification, incorporating new insights from China, Kazakhstan, Russia and North America. www.iamg.org /cqs/cqsarticle1.htm

geohistory Lower one with possible thickness around 300-400 m is constituted by limestones, dolomites and gypsums of the Upper Carboniferous and Asselian stage of the Lower Permian. Middle division is formed by strata of alternating dolomites, gypsums and other varieties of Sakmarian stage with thickness about 150 m. www.scope.ruc.dk /geohistory.htm

Schultze, H.P. and R.R. West. 1996. An Eugeneodontid elasmobranch from the Late Paleozoic of Kansas Depending on the placement of the Pennsylvanian-Permian boundary, this specimen extends the upper limit of the species from the Virgilian (Gzelian) into the Gearyan (Asselian). A tooth battery, palatoquadrate, and a gill arch element of Bobbodus schaefferi were collected from Late Pennsylvanian/Early Permian (Asselian) rocks near Manhattan, Kansas. The new range thus is Kasimovian to Asselian, a 15 my interval. www.ksu.edu /biology/bio/faculty/west/west_abstract2.html

Tamara Schiappa Main focus of my current research is characterizing the Asselian - Sakmarian stage boundary stratotype of the Cisuralian Series, Lower Permian, based on ammonoid, conodont and fusulinid biostratigraphy. My Ph.D. dissertation is titled "Lower Permian (Asselian - Sakmarian) Stratigraphy and Biostratigraphy (ammonoid and conodont) of Novogafarovo and Kondurovsky, southern Ural Mountains, Russia). This study examines the ammonoid and conodont biostratigraphy and detailed lithostratigraphy of the Sakmarian boundary and body stratotype section in the southern Ural Mountains, Russia. pri.boisestate.edu /tamra.htm

vol1-p47 The non-ammonoid cephalopod fauna described here was collected from the upper Gzhelian-lower Asselian (Upper Carboniferous to Lower Permian) hydrozoan-algal buildups in the Taishaku Limestone Group, Southwest Japan. Late Gzhelian (Carboniferous) to early Asselian (Permian) non-ammonid cephalopods from the Taishaku Limestone Group, Southwest Japan This fauna is important because it adds some new data to a poorly known Late Carboniferous-Early Pemlian non-ammonoid cephalopod fauna. ammo.kueps.kyoto-u.ac.jp /palaeont/publish/pr/pr-abust/vol.1/vol1-p47.html

Tetranar Stratigraphic range:Latentifistula crux Zone, Gzelian, Late Carboniferous to Asselian, Early Permian. www.mnhn.fr /mnhn/geo/radworld/genarchaeo/Tetranar.html

Anais da Academia Brasileira de Ciências - The Botrychiopsis genus and its biostratigraphic implications in Southern Paraná Basin In the Southern Paraná Basin, Botrychiopsis plantiana is restricted to Asselian/ Artinskian and Botrychiopsis valida to Kungurian. (1979), this interval is equivalent to either the Stephanian C - Sakmarian boundary or, according to Faddeieva (1976), to the base of the Asselian in Russia. The Faxinal microflora associated with the Botrychiopsis plantiana Subzone suggests a Stephanian C/Sakmarian or lower Asselian age. www.scielo.br /scielo.php?script=sci_arttext&pid=S0001-37652003000400009&lng=en&nrm=iso&tlng=en

paper_6700.htm A major unconformity separates the pre-Permian section from the overlying ?Unayzah Formation, where the palynofloral recovery suggests that the equivalence of the ‘upper unit’ is of Late - Early Permian, Ufimian - Artinskian age whilst the ‘lower unit’ is of Early Permian, Sakmarian - Asselian age. The oldest strata encountered are low-grade metamorphic sediments inferred to be of questionable Pre-Cambrian age and correlative with the Slate-Greywacke Series as seen at outcrop in Jordan and Saudi Arabia. Khuff Formation rests with a significant facies change upon the underlying Unayzah Formation which almost certainly reflects a major intra-Late Permian, Tatarian sequence boundary. aapg.confex.com /aapg/de2001/techprogram/paper_6700.htm

Yazdi The presence of this bed confirmed that, similar biota to western Australia lived at the time of Early Asselian in the Shotori Range close to CPB. Interesting point that I should mention about CPB in eastern part of Iran (Shotori Range) is: a bed (20 Cm thick) with all reworked and redeposits Early Permian fauna. sds.uta.edu /sds18/Yazdi.htm

Freiberger Forschungshefte - Paläontologie, Stratigraphie, Fazies Palaeoecology and Palaeobiogeography of "marine" calcareous algae from the continental-lacustrine Niederhäslich-limestone of the intramontane Döhlen basin (Lower Rotliegend, Asselian, Elbe zone) www.geo.tu-freiberg.de /psf/contents/00011993/index.htm

Upper Palaeozoic Fossils from Clastic Sedimentary Rocks in the Gorski Kotar Region, Geologia Croatica, 50/2, 187-199, Zagreb, 1997 The determined taxa range from the Lower Carboniferous (Viséan), through the Upper Carboniferous (Moscovian, Kasimovian, Gzhelian), up to the Lower Permian (Asselian) in age. Calcisponges, echinoderms and bryozoans occur frequently, while remnants of molluscs, brachiopods and ostracods are scarce. Some of the clastic sediments show traces of the multiple redeposition. www.geologia-croatica.hr /abstract/gc-50-2-16.html

Argonne report In suport of the above project (a CRADA between Argonne, Texaco, and Gas Research Institute), we are running the CCM3 global climate model (GCM) on the QUAD system for three geologic time intervals: the Quaternary (Pleistocene-Holocene), the mid-Cretaceous (Cenomanian), and the Early Permian (Asselian). GCM runs for the near geologic past are important as they would provide a measure of "natural" climatic variation for the present-day world, as well as good calibration of the model to abundant and temporally constrained geologic data. These simulations, along with the sediment yield/climate calibrations, will be used as input data for stratigraphic modeling. www-unix.mcs.anl.gov /~pieper/paleo.html

Journal of the Geological Society: Earth geography from 400 to 250 Ma: a palaeomagnetic, faunal and facies review Some workers place the Artinskian and Kungurian into the Early, rather than the Mid-, Permian, but that would make the subdivision of the Permian very unequal in time: the Asselian and Sakmarian total 21 Ma, and from the Artinkian to the top of the Permian is 18-21 Ma. We show the outcrop areas of the widespread volcanic outpourings of the Siberian Traps in Figure 11 and also the very substantial Emeishan Traps of South China, both of which occurred at the same time at about 251 Ma, a date that may eventually prove to be better for the Permo-Triassic boundary than 248 Ma. www.findarticles.com /p/articles/mi_qa3721/is_200407/ai_n9453037/pg_7

DGF, Geological Society of Denmark, Geologisk Tidsskrift Nr. 2, 1999 Age determination by comparison of the miospore assemblage to the west european miospore zonation indicates an age coresponding to Gzelian — Asselian, which is approximately 17 m.y. The composition of the miospore assemblage indicates affinity to the nothern sub tropical and arid Tianural floral province by similarity to other miospore assemblages in nothern Canada, the Urals and China. www.2dgf.dk /gt2-99.htm

Keith Miller's selected publications McCahon, T.J. and Miller, K.B., 1997, Climatic significance of natric horizons within Permian (Asselian) palaeosols of north-central Kansas, U.S.A., Sedimentology, v.44, p.113-125. www-personal.ksu.edu /~kbmill/pubs.html

Research Output for Neil Archbold Archbold, N. (2001) The Gondwanan Carboniferous-Permian Boundary: Correlation of the Gondwanan Early Permian (Asselian - Sakmarian), The Second Symposium of the Upper Paleozoic of Argentina. www.research.deakin.edu.au /performance/pubs/reports/cd/2001/output/person/archbne.htm

FACIES Volume 49 The reef was built during the Sakmarian, while the reef substrate and capping beds are of latest Asselian and earliest Artinskian ages, respectively. The internal construction and biotic communities of the Uzunbulak reef of the northwestern Tarim Basin are studied for the first time. The reef substrate beds are composed of skeletal and oncoid grainstone. www.pal.uni-erlangen.de /facies/page/049-abstract.html

Revista de la Asociación Geológica Argentina Wall rocks to the south of the batholith are sedimentary rocks of Upper Carboniferous (Asselian) age, folded and thrusted during the San Rafael phase. To the north of the batholith, where the Carboniferous Tabaquito Granodiorite crops out, the wall rocks consist of severely folded sandstones and shales of probably Lower Carboniferous age. www.gl.fcen.uba.ar /absno50.htm

Bibliography Preserved pedogenic mineral magnetic signature, pedogenesis, and paleoclimate change: Pennsylvanian Roca Shale (Virgilian, Asselian), central Kansas, USA, Sedimentary Geology 114 (1-4), pp. Late Miocene environmental change in Nepal and the northern Indian subcontinent: Stable isotopic evidence from paleosols. www.geocities.com /earthhistory/pweathering.htm

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