@article{cross1962plant, author = "Cross, Aureal T.", title = "Plant Microfossils and Geology: ABSTRACT", year = "1962", journal = "AAPG Bulletin", url = "https://doi.org/10.1306/bc74378b-16be-11d7-8645000102c1865d", doi = "10.1306/bc74378b-16be-11d7-8645000102c1865d", openalex = "W2157473204", volume = "46" } @article{doi101073pnas492158, author = "Evitt, William R.", title = "A DISCUSSION AND PROPOSALS CONCERNING FOSSIL DINOFLAGELLATES, HYSTRICHOSPHERES, AND ACRITARCHS, I", year = "1963", journal = "Proceedings of the National Academy of Sciences", abstract = "Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.", url = "https://doi.org/10.1073/pnas.49.2.158", doi = "10.1073/pnas.49.2.158", openalex = "W2019338098" } @article{doi101073pnas493298, author = "Evitt, William R.", title = "A DISCUSSION AND PROPOSALS CONCERNING FOSSIL DINOFLAGELLATES, HYSTRICHOSPHERES, AND ACRITARCHS, II", year = "1963", journal = "Proceedings of the National Academy of Sciences", abstract = "Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.", url = "https://doi.org/10.1073/pnas.49.3.298", doi = "10.1073/pnas.49.3.298", openalex = "W4233882256" } @misc{mcgregor1963devonian, author = "McGregor, D C", title = "Devonian Plant Microfossils of eastern Canada", year = "1963", url = "https://doi.org/10.4095/121609", doi = "10.4095/121609", openalex = "W2909374975" } @article{hemer1967algae, author = "Hemer, Darwin O. and Nygreen, Paul W.", title = "Algae, Acritarchs and Other Microfossils Incertae Sedis from the Lower Carboniferous of Saudi Arabia", year = "1967", journal = "Micropaleontology", url = "https://doi.org/10.2307/1484669", doi = "10.2307/1484669", number = "2", openalex = "W1994565650", pages = "183", volume = "13", references = "doi101071bt9560054, doi101073pnas492158, doi1023071484478, doi1023072420042, doi1024199jmmv19531804, doi102475ajs2596447, doi105281zenodo15995452, doi105281zenodo16100177, doi105281zenodo16127772, openalexw3024879171" } @misc{rudavskaya1980acritarchs2, author = "Rudavskaya, V. A", title = "Acritarchs of the Late Precambrian oil-and-gas bearing horizons and oils of Eastern Siberia [in Russian], in Microfossils in Petroleum Geology", year = "1980", howpublished = "Leningrad, Nauka, p. 130-140", note = "talkorigins\_source = {true}; raw\_reference = {Rudavskaya, V. A., 1980, Acritarchs of the Late Precambrian oil-and-gas bearing horizons and oils of Eastern Siberia [in Russian], in Microfossils in Petroleum Geology: Leningrad, Nauka, p. 130-140.}" } @article{doi101017s0263593300010051, author = "Downie, C.", title = "Lower Cambrian acritarchs from Scotland, Norway, Greenland and Canada", year = "1982", journal = "Transactions of the Royal Society of Edinburgh Earth Sciences", abstract = "ABSTRACT Assemblages of acritarchs are described from the Fucoid Beds of Skiag Bridge, Knockan Cliff and Skye in NW Scotland, and Holmia Shales of the Mjøsen area of Norway, the Bastion Formation of Ella Ø in East Greenland, the Lower Cambrian of the Burin Peninsula in Newfoundland and from the Gog Formation of the Rocky Mountains of Banff National Park, Alberta. These are shown to be correctable on the basis of acritarchs and with the Lower Cambrian successions of the Russian Platform. Twenty-one genera and fifty-three species of acritarchs and one tasmanitid are described. These include the new genera Skiagia and Volkovia, and thirteen new species, Acrum cylindiferum, Micrhystridium coniferum, M. ellaensis, M. ellipticum, M. flexispinosum, M. gogensis, M. minutum, M. ordensis, Multiplicisphaeridium? waltoni, Skiagia brevispinosa, S. scottica, Revinotesta ordensis and Evittia irregulare. A number of recombinations have also been made.", url = "https://doi.org/10.1017/s0263593300010051", doi = "10.1017/s0263593300010051", openalex = "W2100361820", references = "doi1010160034666767901303, doi1010160377839882900172, doi1010800191612219779989146, doi10108011035898209455245, doi10108025761900202212131715, doi101130001676061972831299peboto20co2, doi101306m12367, doi1034194bullgguv1346676, openalexw2753647789, openalexw3038870694" } @misc{pyatiletov1986resolutions1, author = "Pyatiletov, V. V", title = "Resolutions of the All-Union Colloquium on plant microfossils (acritarchs) of interior (oil-and-gas bearing) regions of the Siberian Platform [in Russian]", year = "1986", howpublished = "Geologiya i Geofizica, v. 3, p. 116-117", note = "talkorigins\_source = {true}; raw\_reference = {Pyatiletov, V. V., 1986, Resolutions of the All-Union Colloquium on plant microfossils (acritarchs) of interior (oil-and-gas bearing) regions of the Siberian Platform [in Russian]: Geologiya i Geofizica, v. 3, p. 116-117.}" } @article{crossref198915th, title = "15th colloquium on African geology", year = "1989", journal = "Geochimica et Cosmochimica Acta", url = "https://doi.org/10.1016/0016-7037(89)90090-2", doi = "10.1016/0016-7037(89)90090-2", number = "6", openalex = "W4231833489", pages = "1486", volume = "53" } @article{doi105281zenodo16479061, author = "Vidal, Gonzalo and Moczydłowska, Małgorzata and Rudavskaya, Valeria A", title = "Biostratigraphical implications of a Chuaria–Tawuia assemblage and associated acritarchs from the Neoproterozoic of Yakutia", year = "1993", journal = "Biodiversity Heritage Library (Smithsonian Institution)", abstract = "(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.", url = "https://doi.org/10.5281/zenodo.16479061", doi = "10.5281/zenodo.16479061", openalex = "W2745092375" } @article{buick1999acritarchs, author = "Buick, Roger and Knoll, Andrew H.", title = "Acritarchs and microfossils from the Mesoproterozoic Bangemall Group, northwestern Australia", year = "1999", journal = "Journal of Paleontology", abstract = "Three microfossil assemblages occur in the Mesoproterozoic Bangemall Group (1625-1000 Ma) of northwestern Australia, each occupying a different environmental and taphonomic setting. In peritidal environments, benthic prokaryotic filaments and spheroids of matting habit and small size were permineralized by early diagenetic silicification of stromatolitic carbonates. In shallow subtidal environments, benthic filaments of large size and nonmatting habit and planktonic sphaeromorph acritarchs with thin walls and moderate dimensions were compressed in mildly kerogenous shale. In deeper subtidal environments, planktonic megasphaeromorph acritarchs with thick walls were initially entombed in concretionary nodules in highly kerogenous shale and then permineralized by silica during later diagenesis. Taxonomic diversity and numerical abundance evidently decrease offshore. The three assemblages have typical Mesoproterozoic aspects: peritidal benthic habitats were dominated by Siphonophycus-Sphaerophycus-Eosynechococcus-Myxococcoides-Palaeopleurocapsa, shallow subtidal settings were occupied by Siphonophycus-Leiosphaeridia-Pterospermopsimorpha-Satka, and offshore plankton consisted solely of very large chuarid acritarchs. Because of its taphonomic restriction to mid-intertidal stromatolites, the peritidal assemblage can be equated in microenvironment with a similar assemblage in the Neoproterozoic Draken Conglomerate, suggesting that ecological stasis at the community level can last for intervals up to 900 million years. In the deeper subtidal assemblage, the common chuarid has an unusual mode of preservation, in three dimensions in early diagenetic concretions, revealing that it possesses a thick multilamellate wall. Because of this distinctive ultrastructure, the new genus Crassicorium is erected for these fossils, which are among the oldest indubitable eukaryotes. Very large (34-55 μm in diameter) filaments from shallow subtidal habitats are assigned to the emended species Siphonophycus punctatum.", url = "https://doi.org/10.1017/s0022336000040634", doi = "10.1017/s0022336000040634", number = "5", openalex = "W1689399105", pages = "744-764", volume = "73", references = "doi101017cbo9780511601064, doi101073pnas74115088, doi101073pnas87124576, doi101111j150239311988tb02083x, doi101126science1585174, doi101126science1631544, doi101126science2715248470, doi1023071485834, doi105860choice304422, grey1982aspects, openalexw2326083785" } @misc{crossref1999nas, title = "(NAS Colloquium) Geology, Mineralogy, and Human Welfare", year = "1999", url = "https://doi.org/10.17226/9470", doi = "10.17226/9470", openalex = "W4230555195" } @article{doi101016s0146638099001059, author = "Arouri, Khaled R. and Greenwood, Paul F. and Walter, Malcolm R.", title = "A possible chlorophycean affinity of some Neoproterozoic acritarchs", year = "1999", journal = "Organic Geochemistry", url = "https://doi.org/10.1016/s0146-6380(99)00105-9", doi = "10.1016/s0146-6380(99)00105-9", openalex = "W1991983460", references = "doi1010079783642964466, doi1010160016703789901919, doi101029eo066i037p00643, doi1010800191612219779989146, doi101111j150239311988tb02083x, doi101126science2911720, doi101128mr5122212711987, doi1023071485834, doi105860choice314371, openalexw1602853227, openalexw58024457" } @article{doi101016s014663809900145x, author = "Arouri, Khaled R. and Greenwood, Paul F. and Walter, Malcolm R.", title = "Biological affinities of Neoproterozoic acritarchs from Australia: microscopic and chemical characterisation", year = "2000", journal = "Organic Geochemistry", url = "https://doi.org/10.1016/s0146-6380(99)00145-x", doi = "10.1016/s0146-6380(99)00145-x", openalex = "W1979089141", references = "doi10100797814615289062, doi1010160009254185900117, doi1010160016703784903673, doi1010160016703789901919, doi101017cbo9780511601064, doi10106311674108, doi101073pnas492158, doi1010800191612219779989146, doi1023071485622, doi105860choice314371, openalexw2265339695" } @article{crossref2001the, title = "The Ecology of Invasions by Animals and Plants", year = "2001", journal = "Biodiversity \& Conservation", url = "https://doi.org/10.1023/a:1016659111889", doi = "10.1023/a:1016659111889", number = "9", openalex = "W4246821483", pages = "1601-1601", volume = "10" } @article{doi101016jprecamres200505006, author = "Marshall, Craig P. and Javaux, Emmanuelle J. and Knoll, Andrew H. and Walter, Malcolm R.", title = "Combined micro-Fourier transform infrared (FTIR) spectroscopy and micro-Raman spectroscopy of Proterozoic acritarchs: A new approach to Palaeobiology", year = "2005", journal = "Precambrian Research", url = "https://doi.org/10.1016/j.precamres.2005.05.006", doi = "10.1016/j.precamres.2005.05.006", openalex = "W2146280895", references = "doi1010160016703789901919, doi101016s0146638099001059, doi101016s014663809900145x, doi101073pnas0403984101, doi10108011035898209455245, doi101093molbevmsh075, doi101103physrevb20392, doi101103physrevb6114095, doi101126science1069651, doi1013660003702814732256, doi1016660094837320000260386bpngns20co2, doi1023071485622, doi1023071485800, doi1023071485834" } @article{doi101111j14754983200500484x, author = "Yao, Jinxian and Xiao, Shuhai and Yin, Leiming and Li, Guoxiang and Yuan, Xunlai", title = "BASAL CAMBRIAN MICROFOSSILS FROM THE YURTUS AND XISHANBLAQ FORMATIONS (TARIM, NORTH-WEST CHINA): SYSTEMATIC REVISION AND BIOSTRATIGRAPHIC CORRELATION OF MICRHYSTRIDIUM-LIKE ACRITARCHS", year = "2005", journal = "Palaeontology", abstract = "Abstract: Micrhystridium-like acritarchs are widely distributed in basal Cambrian cherts and phosphorites in South China. This paper describes similar acritarchs from the basal Cambrian Yurtus and Xishanblaq formations in Tarim, north-west China. The taxonomy of these acritarchs is revised. The basal Cambrian acritarch assemblage in Tarim and South China is characterized by three genera: Asteridium Moczydłowska, Heliosphaeridium Moczydłowska and Comasphaeridium Staplin, Jansonius and Pocock. This assemblage is named the Asteridium-Heliosphaeridium-Comasphaeridium (AHC) acritarch assemblage. In both South China and Tarim, the AHC acritarch assemblage is associated with the tubular microfossil Megathrix longus Yin L. and the small shelly fossil Kaiyangites novilis Qian and Yin G. This assemblage also occurs in the Lower Tal Formation in the Lesser Himalaya. Correlation with small shelly fossil (SSF) assemblages indicates that the AHC assemblage is restricted to the Meishucunian Stage, and possibly to the lower Meishucunian (Anabarites trisulcatus-Protohertzina anabarica and Siphogonuchites triangularis-Paragloborilus subglobosus SSF assemblages). The AHC assemblage is broadly similar to the Asteridium tornatum-Comasphaeridium velvetum (acritarch) Zone in the East European Platform, which is considered to be Nemakit-Daldynian (and possibly Tommotian) in age.", url = "https://doi.org/10.1111/j.1475-4983.2005.00484.x", doi = "10.1111/j.1475-4983.2005.00484.x", openalex = "W1693703638", references = "doi101006dbio20020714, doi101016jpalaeo200202001, doi101016jprecamres200310013, doi101017s009483730001681x, doi101017s0263593300010051, doi101073pnas250491697, doi101098rstb19950029, doi101111j150239311994tb01558x, doi101826182003741571989, doi1023071485800, openalexw2326083785, tiwari1999organicwalled" } @incollection{dorning2005microfossils, author = "Dorning, K.J.", title = "MICROFOSSILS | Acritarchs", year = "2005", booktitle = "Encyclopedia of Geology", url = "https://doi.org/10.1016/b0-12-369396-9/00039-3", doi = "10.1016/b0-12-369396-9/00039-3", openalex = "W4231593988", pages = "418-428", references = "doi1010160377839882900172, doi101016s001669958780092x, doi101144gsjgs15030501, doi101144gsjgs15230487, openalexw3145884597, openalexw598134084" } @article{doi101002gj1062, author = "Chuanming, Zhou and Xie, Guwei and McFadden, Kathleen A. and Xiao, Shuhai and Xunlai, Yuan", title = "The diversification and extinction of Doushantuo‐Pertatataka acritarchs in South China: causes and biostratigraphic significance", year = "2006", journal = "Geological Journal", url = "https://doi.org/10.1002/gj.1062", doi = "10.1002/gj.1062", openalex = "W2007915553", references = "chu2003sulfur, doi1010160301926894000708, doi101016jprecamres200511003, doi101016s0301926802002085, doi101016s0301926802002097, doi10103835318, doi101111j14754983200500484x, doi101126science1101476, doi101126science1107765, doi101126science28153811342, doi101130b256301, doi101130g205191, doi101146annurevearth33092203122519, doi10182618200374742199101" } @article{doi10166612157r, author = "Xiao, Shuhai and Zhou, Chuanming and Liu, Pengju and Wang, Dan and Yuan, Xunlai", title = "Phosphatized acanthomorphic acritarchs and related microfossils from the Ediacaran Doushantuo Formation at Weng'an (South China) and their implications for biostratigraphic correlation", year = "2014", journal = "Journal of Paleontology", abstract = "The Doushantuo Formation at Weng'an in Guizhou Province, South China, is best known for animal embryo-like microfossils preserved in phosphorites. However, this unit also contains a diverse assemblage of three-dimensionally phosphatized acanthomorphic acritarchs, which are useful in the biostratigraphic subdivision and correlation of the lower–middle Ediacaran System. These acritarchs can be studied using both thin sectioning and acid maceration techniques, thus have the potential to resolve taxonomic inconsistencies between acritarchs preserved in cherts and shales. This paper presents a systematic treatment of acanthomorphs (and related spheroidal microfossils) from the Doushantuo Formation at Weng'an. More than 40 distinct species are described, including the following new species: Asterocapsoides robustus n. sp., Knollisphaeridium? bifurcatum n. sp., Megasphaera cymbala n. sp., Megasphaera patella n. sp., Megasphaera puncticulosa n. sp., Mengeosphaera eccentrica n. gen. n. sp., Papillomembrana boletiformis n. sp., Sinosphaera variabilis n. sp., Tanarium victor n. sp., Tianzhushania rara n. sp., Variomargosphaeridium gracile n. sp., and Weissiella brevis n. sp. The Weng'an microfossil assemblage is dominated by Megasphaera and Mengeosphaera but shares some taxa that are characteristic of the Tianzhushania spinosa biozone and the Tanarium conoideum – Hocosphaeridium scaberfacium – Hocosphaeridium anozos biozone recognized in the Yangtze Gorges area. It may represent a transitional assemblage between these two biozones. The Weng'an microfossil assemblage also shares some elements with Ediacaran acanthomorph assemblages from Australia, Siberia, and East European Platform, indicating at least partial biostratigraphic overlap with those assemblages. Among the taxa described here, T. spinosa and H. anozos emerges as easily recognizable and widely distributed acanthomorph species whose first appearance may be used to define acanthomorph biozones for regional and global biostratigraphic correlation of lower–middle Ediacaran successions.", url = "https://doi.org/10.1666/12-157r", doi = "10.1666/12-157r", openalex = "W1897120881", references = "doi101111j1525142x201200562x, doi10166613009" } @article{doi10166613009, author = "Liu, Pengju and Xiao, Shuhai and Yin, Chongyu and Chen, Shouming and Zhou, Chuanming and Li, Meng", title = "Ediacaran Acanthomorphic Acritarchs and Other Microfossils from Chert Nodules of the Upper Doushantuo Formation in the Yangtze Gorges Area, South China", year = "2014", journal = "Journal of Paleontology", abstract = "Silicified microfossils preserved in chert nodules of the Doushantuo Formation in the Yangtze Gorges area of South China have great potential to improve the biostratigraphic subdivision and correlation of the Ediacaran System. This potential can be realized only if solid taxonomy is available. However, a systematic treatment of these microfossils (particularly acanthomorphic acritarchs) is lacking, greatly limiting their biostratigraphic potential. This paper presents the systematic paleontology of silicified microfossils from upper Doushantuo Formation (Member III) chert nodules at three sections in the Yangtze Gorges area. More than 90 species of microfossils are described, including 66 named taxa of acanthomorphs, seven named taxa of sphaeromorphs, 12 taxa of cyanobacterial filaments and coccoids, four taxa of algal thalli, and two species of tubular microfossils. Several acritarch species, including Appendisphaera clava n. sp., Mengeosphaera grandispina n. sp., M. stegosauriformis n. sp., Leiosphaeridia, and possibly Sinosphaera rupina, are shown to be multicellular organisms, consistent with the proposition that some Ediacaran acritarchs may be diapause eggs of early animals. This study supports the view that the Tianzhushania spinosa acanthomorph biozone is unique to the lower Doushantuo Formation in South China (and perhaps its equivalent in northern India) and that Ediacaran acanthomorph assemblages from Australia, Siberia, and East European Platform are younger than the Tianzhushania spinosa biozone. It is proposed that the first occurrence of Hocosphaeridium anozos, a species with easily recognizable morphology and wide taphonomic and geographic distributions, be used to define the second Doushantuo acanthomorph biozone succeeding the Tianzhushania spinosa biozone. New taxa described in this paper include three new genera (Bispinosphaera n. gen.; Yushengia n. gen.; and Granitunica n. gen.) and 40 new species: Appendisphaera? brevispina n. sp., A. clava n. sp., A.? hemisphaerica n. sp., A. longispina n. sp., A. setosa n. sp., Bispinosphaera peregrina n. gen. n. sp., Crinita paucispinosa n. sp., Ericiasphaera densispina n. sp., Hocosphaeridium dilatatum n. sp., Knollisphaeridium denticulatum n. sp., K. longilatum n. sp., K. obtusum n. sp., K. parvum n. sp., Mengeosphaera angusta n. sp., M. bellula n. sp., M. cf. bellula n. sp., M. constricta n. sp., M.? cuspidata n. sp., M.? gracilis n. sp., M. grandispina n. sp., M. latibasis n. sp., M. minima n. sp., M. spicata n. sp., M. spinula n. sp., M. stegosauriformis n. sp., M. triangularis n. sp., M. uniformis n. sp., Sinosphaera asteriformis n. sp., Tanarium acus n. sp., T. elegans n. sp., T. longitubulare n. sp., T.? minimum n. sp., T. obesum n. sp., T. varium n. sp., Urasphaera fungiformis n. sp., U. nupta n. sp., Yushengia ramispina n. gen. n. sp., Granitunica mcfaddeniae n. gen. n. sp., Osculosphaera arcelliformis n. sp., and O. membranifera n. sp.", url = "https://doi.org/10.1666/13-009", doi = "10.1666/13-009", openalex = "W2034395352", references = "buick1999acritarchs, doi101016jepsl200707009, doi101016jgr201101006, doi101038nature05682, doi101073pnas0503660102, doi101073pnas0708336105, doi101073pnas492158, doi10108003115517808527785, doi101111j150239311994tb01558x, doi101126science1107765, doi101126science1473658563, doi101666091331, doi1023071485800, doi1054991jop1973934, lo1980microbial, openalexw2326083785" }