Bulletin of Geosciences最新文献

{"title":"First remains of Diplocynodon cf. ratelii from the early Miocene sites of Ahníkov (Most Basin, Czech Republic)","authors":"M. Chroust, M. Mazuch, M. Ivanov, B. Ekrt, Àngel H. Luján","doi":"10.3140/BULL.GEOSCI.1803","DOIUrl":"https://doi.org/10.3140/BULL.GEOSCI.1803","url":null,"abstract":"","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":"1 1","pages":"123-138"},"PeriodicalIF":1.9,"publicationDate":"2021-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48278093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Early Miocene small mammals from MWQ1/2001 Turtle Joint (Mokrá-Quarry, South Moravia, Czech Republic): biostratigraphical and palaeoecological considerations","authors":"I. Bonilla-Salomón, S. Čermák, Àngel H. Luján, I. Horáček, M. Ivanov, M. Sabol","doi":"10.3140/BULL.GEOSCI.1801","DOIUrl":"https://doi.org/10.3140/BULL.GEOSCI.1801","url":null,"abstract":"Mokra-Quarry (South Moravia, Czech Republic) represents a unique fossil site with an extraordinary abundance and diversity of vertebrate fossil remains. Most research on Mokra-Quarry localities was focused on herpetofauna. Despite its relevance, the mammal fauna has not been yet studied in detail. In this work, the small mammals from one of the karstic fissures, Mokra´-Western Quarry (1/2001 Turtle Joint), are thoroughly described for the first time, including eight different taxa: Prolagus schnaitheimensis, Prolagus cf. vasconinensis, Rhinolophus cf. cluzeli, Rhinolophus cf. grivensis, Galerix sp., Aliveria aff. luteyni, Megacricetodon sp., and Melissiodon dominans. The Megacricetodon finds represent one of the first appearances of this cricetid in Central Europe and sheds light on the early evolution of the genus. Moreover, the small mammal assemblage confirms an early Miocene age (Burdigalian, MN4) for MWQ1/2001. The paleoenvironment inferred shows a dry karst landscape, with patches of woodlands and open steppe, together with marshy areas.","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":"96 1","pages":"99-122"},"PeriodicalIF":1.9,"publicationDate":"2021-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43764444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sequential, multi-taxon encrustation of an orthoceratid cephalopod by stalked blastozoan echinoderms in the middle Silurian (Wenlock Series) of southeastern Indiana, USA","authors":"J. Thomka, T. Bantel","doi":"10.3140/BULL.GEOSCI.1814","DOIUrl":"https://doi.org/10.3140/BULL.GEOSCI.1814","url":null,"abstract":"An orthoceratid cephalopod serving as a substratum for rare encrustation relationships is herein described from the middle Silurian (Wenlock Series, Sheinwoodian Stage) Massie Formation of southeastern Indiana, USA. The partial orthoconic cephalopod phragmocone is preserved as a flattened internal mold with some remnant shell material. The more damaged (presumably upward­facing) side is encrusted by the thecal attachment structure of a trematocystinid holocystitid diploporitan (probably Paulicystis ), which is, in turn, encrusted by a dendritic attachment structure attributable to the hemicosmitid rhombiferan Caryocrinites . This represents an unusual form of multigenerational encrustation by blastozoan pelmatozoans; an encrustation that did not culminate in overgrowth of the cephalopod substratum. More importantly, this occurrence demonstrates preferential use of echinoderm remains as settling sites for later encrusting echinoderms, despite class­level taxonomic differences, and represents an additional example of utilization of a discrete macrofossil – and a rarely reported example of a coeval echinoderm attachment structure – as a substratum for Caryocrinites attachment. Collectively, this material indicates that pelmatozoan encrustation of bioclasts in otherwise softground substrates is controlled by more complex factors than mere occurrence of available biomineralized material. •","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2021-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44822442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Five dispersed medullosalean male organs, one species? Late Pennsylvanian Sydney Coalfield, Canada","authors":"E. Zodrow, J. Pšenička","doi":"10.3140/BULL.GEOSCI.1789","DOIUrl":"https://doi.org/10.3140/BULL.GEOSCI.1789","url":null,"abstract":"","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":"1 1","pages":"29-51"},"PeriodicalIF":1.9,"publicationDate":"2021-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47294803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diggers, gliders and runners: The squirrels from the Ribesalbes-Alcora Basin (East of Spain)","authors":"V. Crespo, A. Fagoaga, F. Ruiz-Sánchez, P. Montoya","doi":"10.3140/BULL.GEOSCI.1805","DOIUrl":"https://doi.org/10.3140/BULL.GEOSCI.1805","url":null,"abstract":"","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":"1 1","pages":"83-97"},"PeriodicalIF":1.9,"publicationDate":"2021-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47632526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Beginning of the Miocene Climatic Optimum in Central Europe in sediment archive of the Most Basin, Czech Republic","authors":"T. Grygar, K. Mach, M. Koubová, Mathieu Martinez, K. Hron, K. Fačevicová","doi":"10.3140/BULL.GEOSCI.1794","DOIUrl":"https://doi.org/10.3140/BULL.GEOSCI.1794","url":null,"abstract":"represents a time of global warming within the persistent Cenozoic cooling (Zachos et al. 2001). The MCO brought thermophilic vertebrate species into central Europe (Böhme 2003), and was terminated by an abrupt return to global cooling. In spite of considerable research efforts, climate evolution in the pre-MCO and early MCO periods has not been fully understood. The southern polar ice cap (Antarctic Ice Sheet, AIS) was considerably reduced during the MCO (Gasson et al. 2016, Levy et al. 2016), perhaps due to a coincidence of particular paleogeographic (Gasson et al. 2016) and orbital settings (De Vleeschouwer et al. 2017), and possibly acting in coincidence with long carbon cycles (Liebrand et al. 2016, Valero et al. 2016). The global pre-MCO climate could also have responded to some specific, yet unidentified trigger(s). A volcanic hypothesis was proposed (Courtillot & Renne 2003), tested, rejected based on a critical discussion on Ar-Ar dating precision (Barry et al. 2010, Armstrong McKay et al. 2015), and finally revoked after new dating and upon addressing all uncertainties of the Miocene time scales (Kasbohm & Schoene 2018). An increase in atmospheric CO2 was assumed to have been the MCO trigger; evidence for this was searched for in","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":"1 1","pages":"61-81"},"PeriodicalIF":1.9,"publicationDate":"2021-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46169949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Systematics of pterobranchs from the Cambrian Period Burgess Shales of Canada and the early evolution of graptolites","authors":"Greta M. Ramírez-Guerrero, C. Cameron","doi":"10.3140/bull.geosci.1797","DOIUrl":"https://doi.org/10.3140/bull.geosci.1797","url":null,"abstract":"o nial pterobranch hemichordates mostly known by their tubes, preserved in the fossil record since the Cambrian Period. Graptolites differ from their sister group Cephalo­ discida, by the presence of a stolon system that supports a colonial lifestyle, the presence of a larval prosicula, and the anatomy of the zooids. Although zooids with preserved morphological details are essentially unknown among fossil graptolites, zooid anatomy is well known from the extant species Rhabdopleura (Mitchell et al. 2013, Maletz & Beli 2018). The subclass comprises the orders Dendroidea, which includes the benthic organisms with an encrusting to erect, bushy morphology formed by irregular branching, as well as the derived, planktic Graptoloidea (Maletz 2014b, Maletz & Cameron 2016). Due to poor fossil preservation, taphonomic processes, and similarities in morphology between taxonomic groups, identification of the specimens is difficult and sometimes mistakenly done, especially in Cambrian forms. The useful criteria to define a graptolite, when the soft­tissue material is not available, include an organic tubarium with fusellar structures surrounded by secondary cortical tissue, and the stolon system (Mitchell et al. 2013). Even when these characteristics are preserved, scanning electron microscopy is frequently used to obtain the most details from the specimens; otherwise, mostly outlines of organic­walled fossils are available for determination (Maletz et al. 2005, LoDuca et al. 2015a). An example of misidentified pterobranchs is the genus Yuknessia, which was originally regarded as an alga (Walcott 1919), but is now recognized as one of the earliest known pterobranchs from the Cambrian Series 3, based on the SEM identification of fuselli in two species (Steiner & Maletz 2012, LoDuca et al. 2015a). Like Yuknessia, a closer look at other taxa may establish a pterobranch affinity (e.g., Dalyia racemata and Malongitubus; Maletz & Steiner 2015, Hu et al. 2018. See Maletz & Beli 2018 for further discussion). We refer to these early forms simply as pterobranchs, based on their organic tubes with fusellar structures, because it is nearly impossible to classify them as cephalodiscids or graptolites. The pterobranch fossil record from the early and middle Cambrian is less complete compared to the Ordovician and Silurian periods (Rickards & Durman 2006), making difficult our understanding of the origin and early evolution of graptolites. It is known that early graptolites","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48682876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Skeletal remains with otoliths in situ of the Miocene croaker Trewasciaena cf. kokeni (Teleostei, Sciaenidae) from the Pannonian of the Vienna Basin","authors":"T. Přikryl, R. Brzobohatý, G. Carnevale","doi":"10.3140/bull.geosci.1813","DOIUrl":"https://doi.org/10.3140/bull.geosci.1813","url":null,"abstract":"","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2020-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47104719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Latest Ordovician-earliest Silurian chitinozoans from the Puna region, north-western Argentina (Western Gondwana)","authors":"G. Puente, F. Paris","doi":"10.3140/bull.geosci.1769","DOIUrl":"https://doi.org/10.3140/bull.geosci.1769","url":null,"abstract":"Lower Palaeozoic basins of Western Gondwana (Robin et al. 2004), because of its geographical extent and fossil record. The southern end of this basin is located in north-western Argentina and its outcrops are exposed in the geological provinces of Puna, Cordillera Oriental, Sierras Subandinas and Sistema de Santa Bárbara (Fig. 1A) (Ramos 1999). In the eastern and central part of the basin, the Upper Ordovician is classically represented by the “Zapla Glacial Horizon” (Schlagintweit 1943) of late Hirnantian age (Monaldi & Boso 1987, de la Puente & Rubinstein 2013, Benedetto et al. 2015), which is locally called the Mecoyita Formation (Turner 1960) or Caspalá Formation (Starck 1995). This glacial horizon is deposited above the Ocloyic regional discordance, which separates it from the Lower and Middle Ordovician strata. The Zapla Glacial Horizon includes three facies associations: massive matrix-rich diamictites, finely stratified diamictites, and graded sandy and conglomerate beds covering the diamictites facies (Astini 2008). It is overlain by transgressive deposits of the Silurian Lipeón Formation (Turner 1960). In the eastern part of the basin, chitinozoan assemblages document a late Hirnantian age for the glacial deposits and support a basal Silurian age assignment for the strata representing the postglacial sequences in a condensed section (de la Puente et al. 2012, de la Puente & Rubinstein 2013, Benedetto et al. 2015). In the central part of the basin, chitinozoan assemblages document a Hirnantian age for the glacial deposits and a Telychian age for the postglacial sequences (Rubinstein et al. 2016). Within the Lower Palaeozoic deposits of western Puna region, in the western part of the basin, no direct sedimentological evidence for glaciation has been found.","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":"1 1","pages":"391-418"},"PeriodicalIF":1.9,"publicationDate":"2020-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48348557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Frasnian-Famennian (Upper Devonian) transition in the northern hemisphere (NE Laurussia and NE Siberia) - an overview","authors":"Andrey V. Zhuravlev, E. Sokiran","doi":"10.3140/bull.geosci.1791","DOIUrl":"https://doi.org/10.3140/bull.geosci.1791","url":null,"abstract":"Gereke, m. & Schindler, e. 2012. “Time­Specific Facies” and biological crises — The Kellwasser Event interval near the Frasnian/Famennian boundary (Late Devonian). Palaeogeography, Palaeoclimatology, Palaeoecology 367– 368, 19–29. DOI 10.1016/j.palaeo.2011.11.024 Gholamalian, h. 2007. Conodont biostratigraphy of the Frasnian­ Famennian boundary in the Esfahan and Tabas areas, Central Iran. Geological Quarterly 51(4), 453–476. hallam, a. & wiGnall, P.b. 1999. Mass extinctions and sea­ level changes. Earth-Science Reviews 48(4), 217–250. DOI 10.1016/S0012­8252(99)00055­0 hladil, j. 2002. Geophysical records of dispersed weathering products on the Frasnian carbonate platform and early Famennian ramps in Moravia, Czech Republic: proxies for eustasy and palaeoclimate. Palaeogeography, Palaeoclimatology, Palaeoecology 181(1–3), 213–250. DOI 10.1016/S0031­0182(01)00480­1 huanG, c., joachimSki, m.m. & GonG, y. 2018. Did climate changes trigger the Late Devonian Kellwasser Crisis? Evidence from a high-resolution conodont δOPO4 record from South China. Earth and Planetary Science Letters 495, 174–184. DOI 10.1016/j.epsl.2018.05.016 iZokh, o.P., iZokh, n.G., Ponomarchuk, v.a. & Semenova, d.v. 2009. Carbon and oxygen isotopes in the Frasnian­Famennian section of the Kuznetsk Basin (southern West Siberia). Geologiya i Geofizika (Russian Geology and Geophysics) 50(7), 786–795. DOI 10.1016/j.rgg.2008.12.007 joachimSki, m.m., oStertaG­henninG, c., PancoSt, r.d., StrauSS, h., freeman, k.h., littke, r., SinninGhe damSté, j.S. & racki, G. 2001. Water column anoxia, enhanced productivity and concomitant changes in δ13C and δ34S across the Frasnian­Famennian boundary (Kowala – Holy Cross Mountains/Poland). Chemical Geology 175, 109–131. DOI 10.1016/S0009­2541(00)00365­X kiSelev, a.i., yarmolyuk, v.v., eGorov, k.n., chernyShov, r.a. & nikiforov, a.v. 2006. Middle Paleozoic Basic Magmatism of the Northwestern Vilyui Rift: Composition, Sources, and Geodynamics. Petrology 14(6), 588–608. DOI 10.1134/S0869591106060051 kRavchińsky, v.a. 2012. Paleozoic large igneous provinces of northern Eurasia: Correlation with mass extinction events. Global and Planetary Change 86–87, 31–36. DOI 10.1016/j.gloplacha.2012.01.007 kRawczyński, w., Piechota, a., soBstel, M., sokiRan, e. & filiPiak, P. 2004. Faunistyczne i środowiskowe zmiany na granicy fran­famen w profilu geologicznym Kamenki (Centralne Pole Dewońskie, Rosja), p. 38. In XIX Konferencja Paleobiologów i Biostratygrafów PTG, Wrocław 16–18.09. 2004. krylova, a.k. 1955. Spiriferids of the Devonian of the Volga­Ural region. Trudy Vsesoûznogo Neftânogo NaučnoIssledovatel’skogo Geologorazvedočnogo Instituta, Novaâ Seriâ 88, 297–331. [in Russian] krylova, a.k. 1959. The Upper Devonian of Stolb Island in the Lena River mouth. Doklady AN SSSR 124(1), 162–164. [in Russian] krylova, a.k. 1962. Stratigrafia i brachiopody devona Sibirskoy platformy [Stratigraphy and brachiopods of the Devonian of Siberian Platform]. 108pp. Tr. VNIGRI, 200","PeriodicalId":9332,"journal":{"name":"Bulletin of Geosciences","volume":"1 1","pages":"419-439"},"PeriodicalIF":1.9,"publicationDate":"2020-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41887160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}