Microfossils from the Precambrian-Early Cambrian, Chengjiang, China

Total Page：16

File Type：pdf, Size：1020Kb

INA 16 - Athens, Greece 81 Microfossils from the Precambrian-Early Cambrian, Chengjiang, China Kazuki Hoshina Yamagata University, Department of Earth & Environmental Sciences, Yamagata, Japan; [email protected] Yuanda Lei Jinan University, Institute of Groundwater & Earth Sciences, Guangzhou, China; [email protected] Huai-Zhi Wu Nanjing Institute of Geology & Paleontology, Chinese Academy of Sciences, Xuanwu Qu, Nanjing Shi, Jiangsu Sheng, China; [email protected] Shijun Jiang Jinan University, Institute of Groundwater & Earth Sciences, Guangzhou, China; [email protected] Richard W. Jordan Yamagata University, Yamagata, Japan; [email protected] The Maotianshan, Ma’anshan, and Xiaolantian sections Isoxys, Yunnanocephalus, and Waptia. In 2017, a much are part of the Chengjiang Fossil Site in Chengjiang more comprehensive suite of samples was collected from County, Yunnan Province, China, and represent the most the Xiaolantian section across the Cambrian-Precambrian important record of Early Cambrian fauna. Already over boundary (every 1m) and from the Xiaowaitoushan Mem- 200 species belonging to 16 phyla have been discovered, ber (every 2 to 5m), representing a section about 150m in mainly from the Yu’anshan Member. However, there is length along the footpath. Over 80 well-preserved fossil little documentation about the microfossils, such as the specimens were also obtained from the Ma’anshan shale small shelly fossils (SSFs) in the Zhongyicun Member section, consisting largely of the fossil animal genera (earliest Cambrian) and acritarchs in the Xiaowaitoushan Kunmingella, Eoredlichia, Maotianshania, and Ambro- Member (latest Precambrian; Ediacaran). Rock sam- linevitus and the algal genus Yuknessia. There is evidence ples from the Yu’anshan Member at Maotianshan were that the deposition of these assemblages represents rapid obtained in 2016, and contained fossil animals such as downslope burial..

Copy Link

Recommended publications

Soft−Part Preservation in Two Species of the Arthropod Isoxys from the Middle Cambrian Burgess Shale of British Columbia, Canada
Soft−part preservation in two species of the arthropod Isoxys from the middle Cambrian Burgess Shale of British Columbia, Canada DIEGO C. GARCÍA−BELLIDO, JEAN VANNIER, and DESMOND COLLINS García−Bellido, D.C., Vannier, J., and Collins, D. 2009. Soft−part preservation in two species of the arthropod Isoxys from the middle Cambrian Burgess Shale of British Columbia, Canada. Acta Palaeontologica Polonica 54 (4): 699–712. doi:10.4202/app.2009.0024 More than forty specimens from the middle Cambrian Burgess Shale reveal the detailed anatomy of Isoxys, a worldwide distributed bivalved arthropod represented here by two species, namely Isoxys acutangulus and Isoxys longissimus. I. acutangulus had a non−mineralized headshield with lateral pleural folds (= “valves” of previous authors) that covered the animal’s body almost entirely, large frontal spherical eyes and a pair of uniramous prehensile appendages bearing stout spiny outgrowths along their anterior margins. The 13 following appendages had a uniform biramous design—i.e., a short endopod and a paddle−like exopod fringed with marginal setae with a probable natatory function. The trunk ended with a flap−like telson that protruded beyond the posterior margin of the headshield. The gut of I. acutangulus was tube−like, running from mouth to telson, and was flanked with numerous 3D−preserved bulbous, paired features inter− preted as digestive glands. The appendage design of I. acutangulus indicates that the animal was a swimmer and a visual predator living off−bottom. The general anatomy of Isoxys longissimus was similar to that of I. acutangulus although less information is available on the exact shape of its appendages and visual organs.
[Show full text]
Fossils from South China Redefine the Ancestral Euarthropod Body Plan Cédric Aria1 , Fangchen Zhao1, Han Zeng1, Jin Guo2 and Maoyan Zhu1,3*
Aria et al. BMC Evolutionary Biology (2020) 20:4 https://doi.org/10.1186/s12862-019-1560-7 RESEARCH ARTICLE Open Access Fossils from South China redefine the ancestral euarthropod body plan Cédric Aria1 , Fangchen Zhao1, Han Zeng1, Jin Guo2 and Maoyan Zhu1,3* Abstract Background: Early Cambrian Lagerstätten from China have greatly enriched our perspective on the early evolution of animals, particularly arthropods. However, recent studies have shown that many of these early fossil arthropods were more derived than previously thought, casting uncertainty on the ancestral euarthropod body plan. In addition, evidence from fossilized neural tissues conflicts with external morphology, in particular regarding the homology of the frontalmost appendage. Results: Here we redescribe the multisegmented megacheirans Fortiforceps and Jianfengia and describe Sklerolibyon maomima gen. et sp. nov., which we place in Jianfengiidae, fam. nov. (in Megacheira, emended). We find that jianfengiids show high morphological diversity among megacheirans, both in trunk ornamentation and head anatomy, which encompasses from 2 to 4 post-frontal appendage pairs. These taxa are also characterized by elongate podomeres likely forming seven-segmented endopods, which were misinterpreted in their original descriptions. Plesiomorphic traits also clarify their connection with more ancestral taxa. The structure and position of the “great appendages” relative to likely sensory antero-medial protrusions, as well as the presence of optic peduncles and sclerites, point to an overall
[Show full text]
Soft Anatomy of the Early Cambrian Arthropod Isoxys Curvirostratus from the Chengjiang Biota of South China with a Discussion on the Origination of Great Appendages
Soft anatomy of the Early Cambrian arthropod Isoxys curvirostratus from the Chengjiang biota of South China with a discussion on the origination of great appendages DONG−JING FU, XING−LIANG ZHANG, and DE−GAN SHU Fu, D.−J., Zhang, X.−L., and Shu, D.−G. 2011. Soft anatomy of the Early Cambrian arthropod Isoxys curvirostratus from the Chengjiang biota of South China with a discussion on the origination of great appendages. Acta Palaeontologica Polonica 56 (4): 843–852. An updated reconstruction of the body plan, functional morphology and lifestyle of the arthropod Isoxys curvirostratus is proposed, based on new fossil specimens with preserved soft anatomy found in several localities of the Lower Cambrian Chengjiang Lagerstätte. The animal was 2–4 cm long and mostly encased in a single carapace which is folded dorsally without an articulated hinge. The attachment of the body to the exoskeleton was probably cephalic and apparently lacked any well−developed adductor muscle system. Large stalked eyes with the eye sphere consisting of two layers (as corneal and rhabdomeric structures) protrude beyond the anterior margin of the carapace. This feature, together with a pair of frontal appendages with five podomeres that each bear a stout spiny outgrowth, suggests it was raptorial. The following 14 pairs of limbs are biramous and uniform in shape. The slim endopod is composed of more than 7 podomeres without terminal claw and the paddle shaped exopod is fringed with at least 17 imbricated gill lamellae along its posterior margin. The design of exopod in association with the inner vascular (respiratory) surface of the carapace indicates I.
[Show full text]
Early Cambrian Fuxianhuiids from China Reveal Origin of the Gnathobasic Protopodite in Euarthropods
Early Cambrian fuxianhuiids from China reveal origin of the gnathobasic protopodite in euarthropods The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters Citation Yang, Jie, Javier Ortega-Hernández, David A. Legg, Tian Lan, Jin-bo Hou, and Xi-guang Zhang. 2018. “Early Cambrian fuxianhuiids from China reveal origin of the gnathobasic protopodite in euarthropods.” Nature Communications 9 (1): 470. doi:10.1038/s41467-017-02754-z. http://dx.doi.org/10.1038/s41467-017-02754-z. Published Version doi:10.1038/s41467-017-02754-z Citable link http://nrs.harvard.edu/urn-3:HUL.InstRepos:35015071 Terms of Use This article was downloaded from Harvard University’s DASH repository, and is made available under the terms and conditions applicable to Other Posted Material, as set forth at http:// nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of- use#LAA ARTICLE DOI: 10.1038/s41467-017-02754-z OPEN Early Cambrian fuxianhuiids from China reveal origin of the gnathobasic protopodite in euarthropods Jie Yang1, Javier Ortega-Hernández 2,3, David A. Legg 4, Tian Lan5, Jin-bo Hou1 & Xi-guang Zhang 1 Euarthropods owe their evolutionary and ecological success to the morphological plasticity of their appendages. Although this variability is partly expressed in the specialization of the 1234567890():,; protopodite for a feeding function in the post-deutocerebral limbs, the origin of the former structure among Cambrian representatives remains uncertain. Here, we describe Alacaris mirabilis gen. et sp. nov. from the early Cambrian Xiaoshiba Lagerstätte in China, which reveals the proximal organization of fuxianhuiid appendages in exceptional detail.
[Show full text]
The Endemic Radiodonts of the Cambrian Stage 4 Guanshan Biota of South China
Editors' choice The endemic radiodonts of the Cambrian Stage 4 Guanshan Biota of South China DE-GUANG JIAO, STEPHEN PATES, RUDY LEROSEY-AUBRIL, JAVIER ORTEGA-HERNÁNDEZ, JIE YANG, TIAN LAN, and XI-GUANG ZHANG Jiao, D.-G., Pates, S., Lerosey-Aubril, R., Ortega-Hernández, J., Yang, J., Lan, T., and Zhang, X.-G. 2021. The endemic radiodionts of the Cambrian Stage 4 Guanshan Biota of South China. Acta Palaeontologica Polonica 66 (2): 255–274. The Guanshan Biota (South China, Cambrian, Stage 4) contains a diverse assemblage of biomineralizing and non-biomin- eralizing animals. Sitting temporally between the Stage 3 Chengjiang and Wuliuan Kaili Biotas, the Guanshan Biota con- tains numerous fossil organisms that are exclusive to this exceptional deposit. The Guanshan Konservat-Lagerstätte is also unusual amongst Cambrian strata that preserve non-biomineralized material, as it was deposited in a relatively shallow water setting. In this contribution we double the diversity of radiodonts known from the Guanshan Biota from two to four, and describe the second species of Paranomalocaris. In addition, we report the first tamisiocaridid from South China, and confirm the presence of a tetraradial oral cone bearing small and large plates in “Anomalocaris” kunmingensis, the most abundant radiodont from the deposit. All four radiodont species, and three genera, are apparently endemic to the Guanshan Biota. When considered in the wider context of geographically and temporally comparable radiodont faunas, endemism in Guanshan radiodonts is most likely a consequence of the shallower and more proximal environment in which they lived. The strong coupling of free-swimming radiodonts and benthic communities underlines the complex relationship between the palaeobiogeographic and environmental distributions of prey and predators.
[Show full text]
Annual Meeting 2000
PALAEONTOLOGICAL ASSOCIATION 44th Annual Meeting University of Edinburgh 17-20 December 1999 ABSTRACTS and PROGRAMME Notes: search for keywords or authors using your browser’s "Find" command. For booking details, see the "meetings" section of this site. Oral Presentations BLUE POOL BAY ? A CORAL-REEF OF THE LOWER CARBONIFEROUS OF SOUTH WALES Markus Aretz and Hans-Georg Herbig Institut of Geology, University of Cologne Köln, Zuelpicher Str. 49a, 50674 Cologne, Germany <[email protected]> <[email protected]> Buildups with a rigid coral framework are generally rare in Lower Carboniferous time. An exception was found in the Hunts Bay Oolite-Formation at Blue Pool Bay (Gower Peninsula). This bioherm is intercalated in well-bedded oolitic limestones. It is about 25 meters in width and rises up to 10 meters in thickness. The coral association indicates an Asbian age of the bioherm. The core of the structure consists of large massive colonies of Lithostrotion and a small number of dendroid colonies (Siphonodendron and Syringopora). Most of the corals are preserved in living position. The density of the colonies is high, in many cases they grow upon eachother. Dendroid corals become more common in the outer core. An increase of colonies, which are upside-down orientated, together with broken colonies and coarse debris describe the facies of the flanks. The general decrease of the amount of corals and the gradual increase of fragments of colonies in bioclastic rudstones to wackestones at the top of the structure characterize the end of the biohermal development. Due to the appearance of a coral framework and its thickness, the bioherm is wave resistant.
[Show full text]
Cambrian Stratigraphy and Biostratigraphy of the Flinders Ranges and the North Coast of Kangaroo Island, South Australia
247 by James B. Jago1, James G. Gehling2, John R. Paterson3, Glenn A. Brock4 and Wenlong Zang5 Cambrian stratigraphy and biostratigraphy of the Flinders Ranges and the north coast of Kangaroo Island, South Australia 1 School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA 5095, Australia. E-mail: [email protected] 2 South Australian Museum, North Terrace, Adelaide, SA 5000, Australia. E-mail: [email protected] 3 Division of Earth Sciences, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia. Email: [email protected] 4 Department of Biological Sciences, Macquarie University, NSW 2109, Australia. E-mail: [email protected] 5 Oroya Mining Ltd, Suite 3, 72 Canning Highway, Victoria Park, WA 6100, Australia. E-mail: [email protected] The lower Cambrian sediments of the Flinders unconformably on Neoproterozoic rocks, probably reflecting the Ranges, South Australia can be divided into three influence of the late Ediacaran Petermann Orogeny of Central Australia. Cambrian deposition was strongly influenced by regional sequence sets. They rest unconformably on the Ediacaran tectonism, starting with rifting and finishing with the 514–490 Ma succession. Sequence set C– 1 comprises lower clastic units Delamerian Orogeny. The following information is based on Zang et overlain by a carbonate dominated marine succession al., (2004, 2006). More detailed descriptions and interpretation of that shows marked lateral and vertical facies changes. individual stratigraphic units are found in Gravestock (1995). Figure Sequence sets C– 2 and C– 3 together comprise a largely 2 summarises the Cambrian stratigraphic relationships of the Arrowie and Stansbury basins.
[Show full text]
NEW ANATOMICAL INFORMATION on ANOMALOCARIS from the CAMBRIAN EMU BAY SHALE of SOUTH AUSTRALIA and a REASSESSMENT of ITS INFERRED PREDATORY HABITS by ALLISON C
[Palaeontology, Vol. 56, Part 5, 2013, pp. 971–990] NEW ANATOMICAL INFORMATION ON ANOMALOCARIS FROM THE CAMBRIAN EMU BAY SHALE OF SOUTH AUSTRALIA AND A REASSESSMENT OF ITS INFERRED PREDATORY HABITS by ALLISON C. DALEY1,2*, JOHN R. PATERSON3, GREGORY D. EDGECOMBE1, DIEGO C. GARCIA-BELLIDO4 and JAMES B. JAGO5 1Department of Earth Sciences, The Natural History Museum, Cromwell Road, London, SW7 5BD, UK; e-mails: [email protected] [email protected] 2Department of Earth Sciences, University of Bristol, Wills Memorial Building, Queen’s Road, Bristol, BS8 1RJ, UK; e-mail: [email protected] 3Division of Earth Sciences, School of Environmental and Rural Science, University of New England, Armidale, NSW 2351, Australia; e-mail: [email protected] 4Sprigg Geobiology Centre, School of Earth and Environmental Sciences, University of Adelaide, Adelaide, SA 5005, Australia; e-mail: [email protected] 5School of Natural and Built Environments, University of South Australia, Mawson Lakes, SA 5095,Australia; e-mail: [email protected] *Corresponding author. Typescript received 3 October 2012; accepted in revised form 20 January 2013 Abstract: Two species of Anomalocaris co-occur in the Emu ing of a series of lanceolate blades are similar to those of other Bay Shale (Cambrian Series 2, Stage 4) at Big Gully, Kangaroo anomalocaridids and are found in isolation or associated with Island. Frontal appendages of Anomalocaris briggsi Nedin, body ﬂaps. A single specimen also preserves putative gut diver- 1995, are more common than those of Anomalocaris cf. canad- ticula. The morphology of the appendages, oral cone, gut div- ensis Whiteaves, 1892, at a quarry inland of the wave-cut plat- erticula and compound eyes of Anomalocaris, along with its form site from which these species were originally described.
[Show full text]
Evolution and Taxonomy of Cambrian Arthropods from Greenland and Sweden
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 558 Evolution and taxonomy of Cambrian arthropods from Greenland and Sweden MARTIN STEIN ACTA UNIVERSITATIS UPSALIENSIS ISSN 1651-6214 UPPSALA ISBN 978-91-554-7302-0 2008 urn:nbn:se:uu:diva-9301 !! "#!$% & ' $( !))* ()+)) , - . , / , !))*, 0 1 /. , 2 , ##*, $# , , 3/4 5"*65(6##76"$)!6), 2 8 , 4 8 , & . 8 , 0 1 . 0 / 9 , - . 0 / ! 1 , - . / 9 :' : 0 /. , ; 1 / ! $ 1 , 3 /<. & =< - . 9 , 2 . 3 & 6 1 . , . , ; 1 & , 3 . 6 2 :/ & 6> / . ! 4 & . 3 & , ?' @ 0 $ 7 /. 0 , " # . / 9 . < : : , - : : $ . $ 0 . , & . . ? @ < , " ! % 0 2 - 1 /. & ' ( ' )* +,' ' (-./01, ' ! A / !))* 3// (%#(6%!(7 3/4 5"*65(6##76"$)!6) + +++ 65$)( +BB ,<,B C D + +++ 65$)( List of publications I. Stein, M. 2008. Fritzolenellus lapworthi (Peach and Horne, 1892) from the lower Cambrian (Cambrian Series 2) Bastion Formation of North-East Greenland. Bulletin of the Geological Society of Denmark 56:1–10. II. Stein, M. & Peel,
[Show full text]
New Data for Isoxys of the Balang Fauna (Cambrian Stage 4), South China
New data for Isoxys of the Balang Fauna (Cambrian Stage 4), South China Shuai Liu, Jin Peng, Rongqin Wen & Boyan Liang Isoxys Walcott, 1890 is a large bivalved arthropod taxon, commonly occurring in the Cambrian Series 2–3. Here, we report on a new group of Isoxys from the Balang Fauna (Cambrian Stage 4) of Guizhou, South China. It is composed of five species:Isoxys acutangulus (Walcott, 1908), I. auritus (Jiang, 1982), I. jianheensis sp. nov., I. globulus sp. nov., and Isoxys sp. Isoxys first appeared in the Chengjiang Biota (Cambrian Stage 3) located in the shallow-water Yangtze Platform in Yunnan, South China, and ranged to the Guanshan Biota (Cambrian Stage 4) above the Chengjiang Biota. The Balang Fauna of Guizhou Province is located in the transitional slope area of the deeper-water environments and is equivalent to the Guanshan Biota in age. The discovery of Isoxys in the Balang Fauna suggests that the genus, originally present in the shallow platform of Yunnan, migrated eastward to the deeper water shelf of Guizhou during the early Cambrian (Stage 4), becoming suited to a new ecological environment. The Isoxys assemblage of the Balang Fauna not only adds new taxa record for this genus but also provides new information for its palaeoecology, evolution, and geographic distribution. • Key words: Isoxys, Balang Fauna, Balang Formation, Cambrian, Guizhou, South China. LIU, S., PENG, J., WEN, R. & LIANG, B. 2018. New data for Isoxys of the Balang Fauna (Cambrian Stage 4), South China. Bulletin of Geosciences 93(2), 147–162 (8 figures). Czech Geological Survey, Prague.
[Show full text]
Canada Archives Canada Published Heritage Direction Du Branch Patrimoine De I'edition
THE BURGESS SHALE: A CAMBRIAN MIRROR FOR MODERN EVOLUTIONARY BIOLOGY by Keynyn Alexandra Ripley Brysse A thesis submitted in conformity with the requirements for the degree of Doctor of Philosophy Institute for the History and Philosophy of Science and Technology University of Toronto © Copyright by Keynyn Alexandra Ripley Brysse (2008) Library and Bibliotheque et 1*1 Archives Canada Archives Canada Published Heritage Direction du Branch Patrimoine de I'edition 395 Wellington Street 395, rue Wellington Ottawa ON K1A0N4 Ottawa ON K1A0N4 Canada Canada Your file Votre reference ISBN: 978-0-494-44745-1 Our file Notre reference ISBN: 978-0-494-44745-1 NOTICE: AVIS: The author has granted a non L'auteur a accorde une licence non exclusive exclusive license allowing Library permettant a la Bibliotheque et Archives and Archives Canada to reproduce, Canada de reproduire, publier, archiver, publish, archive, preserve, conserve, sauvegarder, conserver, transmettre au public communicate to the public by par telecommunication ou par Plntemet, prefer, telecommunication or on the Internet, distribuer et vendre des theses partout dans loan, distribute and sell theses le monde, a des fins commerciales ou autres, worldwide, for commercial or non sur support microforme, papier, electronique commercial purposes, in microform, et/ou autres formats. paper, electronic and/or any other formats. The author retains copyright L'auteur conserve la propriete du droit d'auteur ownership and moral rights in et des droits moraux qui protege cette these. this thesis. Neither the thesis Ni la these ni des extraits substantiels de nor substantial extracts from it celle-ci ne doivent etre imprimes ou autrement may be printed or otherwise reproduits sans son autorisation.
[Show full text]
A New Leanchoiliid Megacheiran Arthropod from the Lower Cambrian Emu Bay Shale, South Australia
A new leanchoiliid megacheiran arthropod from the lower Cambrian Emu Bay Shale, South Australia GREGORY D. EDGECOMBE, DIEGO C. GARCÍA−BELLIDO, and JOHN R. PATERSON Edgecombe, G.D., García−Bellido, D.C., and Paterson, J.R. 2011. A new leanchoiliid megacheiran arthropod from the lower Cambrian Emu Bay Shale, South Australia. Acta Palaeontologica Polonica 56 (2): 385–400. The Leanchoiliidae is well−known from abundant material of Leanchoilia, from the Burgess Shale and Chengjiang Konservat−Lagerstätten. The first Australian member of the group is Oestokerkus megacholix gen. et sp. nov., described from the Emu Bay Shale (Cambrian Series 2, Stage 4), at Buck Quarry, Kangaroo Island, South Australia, and is interme− diate in age between the well known leanchoiliid species from the Burgess Shale and Chengjiang. Phylogenetic analysis of “short great appendage” arthropods (Megacheira) in the context of the chelicerate stem group resolves the Australian species as sister to Burgess Shale, Utah, and Chengjiang Leanchoilia species, but most readily distinguished from Leanchoilia and Alalcomenaeus by a different telson shape, interpreted as being forked, widening distally, and with a few dorsally curved spines at the posterior angle. Leanchoiliid interrelationships are stable to alternative character weights, and Megacheira corresponds to a clade in most analyses. Key words: Arthropoda, Megacheira, Leanchoiliidae, Oestokerkus, Leanchoilia, Alalcomenaeus, midgut glands, phylog− eny, Cambrian, South Australia. Gregory D. Edgecombe [[email protected]], Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK; Diego C. García−Bellido [[email protected]], Departamento de Paleontología, Instituto de Geología Econó− mica/Instituto de Geociencias (CSIC−UCM), José Antonio Novais 2, 28040−Madrid, Spain; John R.
[Show full text]