Triassic) in Barreal Depocenter, San Juan Province, Argentina
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M.Sc. Plant Science (Applicable to Students Admitted in 2009 Onwards)
M.Sc. Plant Science (Applicable to students admitted in 2009 onwards) (w.e.f. examination of 2009 onwards) M.Sc. I (Previous) Semester I Paper I - Microbiology (Bacteriology, Virology) and Microbial 100 Marks Biotechnology. Paper II - Mycology & Plant Pathology (Fungal Diseases) 100 Marks Paper III - Algology & Lichenology 100 Marks Paper IV - Bryology 100 Marks Practical - Based on Papers I to IV including 200 Marks Class and Field Work (Local excursion) 600 Marks Semester II Paper V - Pteridophytes 100 Marks Paper VI - Gymnosperms and Palaeobotany 100 Marks Paper VII - Angiosperms: Taxonomy and Economic Botany 100 Marks Paper VIII - Angiosperms: Histology, Anatomy, Embryology 100 Marks Practical - Based on Papers V to VIII 200 Marks - Class and Field Work (Local excursion) 600 Marks Students have to take all the eight papers. M.Sc. II (Final) Semester III Paper I - Cytology, Genetics and Cytogenetics 100 Marks Paper II - Plant Breeding and Biostatistics 100 Marks Paper III - Ecology, Environment and Soil Science 100 Marks Paper IV - Modern experimental techniques and computer application 100 Marks Practical - Based on Papers I to IV including 200 Marks - Class and field work/Laboratory visit 600 Marks Semester IV Paper V - Plant Physiology 100 Marks Paper VI - Cell Biology & Plant Biochemistry 100 Marks Paper VII - Biotechnology and Human welfare 100 Marks Paper VIII Elective - Project work (Review based on all Papers from 100 Marks Semester I to IV) Practical - Based on Papers V and VII 200 Marks (Incl. Biotech Lab visits & class work) 600 Marks Students have to take all the seven papers (a) The theory papers would have internal evaluation by the teaching/guest faculty as decided by the Coordinator in accordance with the nature and requirement of the subject and shall be notified to the students in the beginning of the semester. -
Gondwana Vertebrate Faunas of India: Their Diversity and Intercontinental Relationships
438 Article 438 by Saswati Bandyopadhyay1* and Sanghamitra Ray2 Gondwana Vertebrate Faunas of India: Their Diversity and Intercontinental Relationships 1Geological Studies Unit, Indian Statistical Institute, 203 B. T. Road, Kolkata 700108, India; email: [email protected] 2Department of Geology and Geophysics, Indian Institute of Technology, Kharagpur 721302, India; email: [email protected] *Corresponding author (Received : 23/12/2018; Revised accepted : 11/09/2019) https://doi.org/10.18814/epiiugs/2020/020028 The twelve Gondwanan stratigraphic horizons of many extant lineages, producing highly diverse terrestrial vertebrates India have yielded varied vertebrate fossils. The oldest in the vacant niches created throughout the world due to the end- Permian extinction event. Diapsids diversified rapidly by the Middle fossil record is the Endothiodon-dominated multitaxic Triassic in to many communities of continental tetrapods, whereas Kundaram fauna, which correlates the Kundaram the non-mammalian synapsids became a minor components for the Formation with several other coeval Late Permian remainder of the Mesozoic Era. The Gondwana basins of peninsular horizons of South Africa, Zambia, Tanzania, India (Fig. 1A) aptly exemplify the diverse vertebrate faunas found Mozambique, Malawi, Madagascar and Brazil. The from the Late Palaeozoic and Mesozoic. During the last few decades much emphasis was given on explorations and excavations of Permian-Triassic transition in India is marked by vertebrate fossils in these basins which have yielded many new fossil distinct taxonomic shift and faunal characteristics and vertebrates, significant both in numbers and diversity of genera, and represented by small-sized holdover fauna of the providing information on their taphonomy, taxonomy, phylogeny, Early Triassic Panchet and Kamthi fauna. -
Andrew Leslie
Andrew Leslie [email protected] • (401) 863-5931 • andrewleslielab.com Department of Ecology and Evolutionary Biology • Brown University Box G-W, 80 Waterman Street • Providence, RI 02912 EDUCATION Ph.D., University of Chicago (Chicago, IL) 2010 Department of the Geophysical Sciences Dissertation: Forms following functions: exploring the evolution of morphological diversity in seed plant reproductive structures. C. Kevin Boyce (advisor), Peter Crane, David Jablonski, Michael LaBarbera, Manfred Rudat B.A. (with honors), University of Pennsylvania 2004 Geology (honors); Biochemistry (honors) Honors thesis: Leaf development in Carboniferous seed plants. Hermann Pfefferkorn (advisor) CURRENT APPOINTMENT Assistant Professor 2014-present Department of Ecology and Evolutionary Biology, Brown University RESEARCH EXPERIENCE Postdoctoral research associate, Yale University 2010-2014 Projects: Fossil conifer descriptions, conifer phylogenetics, conifer reproductive biology, molecular dating techniques, character evolution (advisors: Peter Crane, Michael Donoghue) Doctoral dissertation research, University of Chicago 2004-2010 Topics: Conifer evolution, pollination biology, functional morphology (advisor: C. Kevin Boyce) Research assistant, University of Chicago 2007-2009 Project: Cretaceous plant fossil descriptions from Upatoi Creek, Georgia (advisor: Peter Crane) Research assistant, University of North Carolina, Chapel Hill 2006 Project: Reproductive morphology of the Devonian plant Rhacophyton (advisor: Patricia Gensel) Leslie CV 1 Research -
Exceptionally Well-Preserved Early Cretaceous Leaves of Nilssoniopteris from Central Mongolia
Acta Palaeobotanica 58(2): 135–157, 2018 e-ISSN 2082-0259 DOI: 10.2478/acpa-2018-0016 ISSN 0001-6594 Exceptionally well-preserved Early Cretaceous leaves of Nilssoniopteris from central Mongolia FABIANY HERRERA1,5,*, GONGLE SHI2, GOMBOSUREN TSOLMON3, NIIDEN ICHINNOROV 3, MASAMICHI TAKAHASHI4, PETER R. CRANE5,6 and PATRICK S. HERENDEEN1 1 Chicago Botanic Garden, Glencoe, Illinois 60022 USA; e-mails: [email protected]; [email protected] 2 State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008 People’s Republic of China; e-mail: [email protected] 3 Institute of Paleontology and Geology, Mongolian Academy of Sciences, Ulaanbaatar-51, Mongolia; e-mails: [email protected]; [email protected] 4 Department of Environmental Sciences, Niigata University, Ikarashi, Nishi-ku, Niigata 950-2181 Japan; e-mail: [email protected] 5 Oak Spring Garden Foundation, Upperville, Virginia 20184 USA 6 School of Forestry and Environmental Studies, Yale University, New Haven, Connecticut 06511 USA; e-mail: [email protected] Received 20 June 2018; accepted for publication 25 October 2018 ABSTRACT. Two new Early Cretaceous (Aptian-Albian) species of fossil bennettitalean leaves are described from central Mongolia and assigned to the genus Nilssoniopteris. Nilssoniopteris tomentosa F.Herrera, G.Shi, Tsolmon, Ichinnorov, Takahashi, P.R.Crane, et Herend. sp. nov., isolated from bulk sediment samples collected for mesofossils in the Tevshiingovi Formation at the Tevshiin Govi opencast coal mine, is distinctive in having a dense, well-developed indumentum composed of branched, fattened multicellular trichomes on the abaxial leaf surface. -
Diversity and Homologies of Corystosperm Seed-Bearing Structures from the Early Cretaceous of Mongolia Aã B,C D E F Gongle Shi , Peter R
Journal of Systematic Palaeontology ISSN: 1477-2019 (Print) 1478-0941 (Online) Journal homepage: https://www.tandfonline.com/loi/tjsp20 Diversity and homologies of corystosperm seed- bearing structures from the Early Cretaceous of Mongolia Gongle Shi, Peter R. Crane, Patrick S. Herendeen, Niiden Ichinnorov, Masamichi Takahashi & Fabiany Herrera To cite this article: Gongle Shi, Peter R. Crane, Patrick S. Herendeen, Niiden Ichinnorov, Masamichi Takahashi & Fabiany Herrera (2019) Diversity and homologies of corystosperm seed- bearing structures from the Early Cretaceous of Mongolia, Journal of Systematic Palaeontology, 17:12, 997-1029, DOI: 10.1080/14772019.2018.1493547 To link to this article: https://doi.org/10.1080/14772019.2018.1493547 Published online: 14 Jan 2019. Submit your article to this journal Article views: 142 View Crossmark data Full Terms & Conditions of access and use can be found at https://www.tandfonline.com/action/journalInformation?journalCode=tjsp20 Journal of Systematic Palaeontology, 2019 Vol. 17, No. 12, 997–1029, http://dx.doi.org/10.1080/14772019.2018.1493547 Diversity and homologies of corystosperm seed-bearing structures from the Early Cretaceous of Mongolia aà b,c d e f Gongle Shi , Peter R. Crane , Patrick S. Herendeen , Niiden Ichinnorov , Masamichi Takahashi and Fabiany Herrerad aState Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008, China; bOak Spring Garden -
Habit and Ecology of the Petriellales, an Unusual Group of Seed Plants from the Triassic of Gondwana Author(S): Benjamin Bomfleur, Anne-Laure Decombeix, Andrew B
Habit and Ecology of the Petriellales, an Unusual Group of Seed Plants from the Triassic of Gondwana Author(s): Benjamin Bomfleur, Anne-Laure Decombeix, Andrew B. Schwendemann, Ignacio H. Escapa, Edith L. Taylor, Thomas N. Taylor, Stephen McLoughlin Source: International Journal of Plant Sciences, Vol. 175, No. 9 (November/December 2014), pp. 1062-1075 Published by: The University of Chicago Press Stable URL: http://www.jstor.org/stable/10.1086/678087 . Accessed: 08/12/2014 09:32 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. The University of Chicago Press is collaborating with JSTOR to digitize, preserve and extend access to International Journal of Plant Sciences. http://www.jstor.org This content downloaded from 130.242.24.193 on Mon, 8 Dec 2014 09:32:01 AM All use subject to JSTOR Terms and Conditions Int. J. Plant Sci. 175(9):1062–1075. 2014. q 2014 by The University of Chicago. All rights reserved. 1058-5893/2014/17509-0008$15.00 DOI:10.1086/678087 HABIT AND ECOLOGY OF THE PETRIELLALES, AN UNUSUAL GROUP OF SEED PLANTS FROM THE TRIASSIC OF GONDWANA Benjamin Bomfleur,1,*,† Anne-Laure Decombeix,‡ Andrew B. -
1 Relationships of Angiosperms To
Relationships of Angiosperms to 1 Other Seed Plants Seed plants are of fundamental importance both evolution- all gymnosperms (living and extinct) together are not arily and ecologically. They dominate terrestrial landscapes, monophyletic. Importantly, several fossil lineages, Cayto- and the seed has played a central role in agriculture and hu- niales, Bennettitales, Pentoxylales, and Glossopteridales man history. There are fi ve extant lineages of seed plants: (glossopterids), have been proposed as putative close rela- angiosperms, cycads, conifers, gnetophytes, and Ginkgo. tives of the angiosperms based on phylogenetic analyses These fi ve groups have usually been treated as distinct (e.g., Crane 1985; Rothwell and Serbet 1994; reviewed in phyla — Magnoliophyta (or Anthophyta), Cycadophyta, Doyle 2006, 2008, 2012; Friis et al. 2011). These fossil lin- Co ni fe ro phyta, Gnetophyta, and Ginkgophyta, respec- eages, sometimes referred to as the para-angiophytes, will tively. Cantino et al. (2007) used the following “rank- free” therefore be covered in more detail later in this chapter. An- names (see Chapter 12): Angiospermae, Cycadophyta, other fossil lineage, the corystosperms, has been proposed Coniferae, Gnetophyta, and Ginkgo. Of these, the angio- as a possible angiosperm ancestor as part of the “mostly sperms are by far the most diverse, with ~14,000 genera male hypothesis” (Frohlich and Parker 2000), but as re- and perhaps as many as 350,000 (The Plant List 2010) to viewed here, corystosperms usually do not appear as close 400,000 (Govaerts 2001) species. The conifers, with ap- angiosperm relatives in phylogenetic trees. proximately 70 genera and nearly 600 species, are the sec- The seed plants represent an ancient radiation, with ond largest group of living seed plants. -
The Global Vegetation Pattern Across the Cretaceous–Paleogene Mass Extinc- Tion Interval: a Template for Other Extinction Events
ÔØ ÅÒÙ×Ö ÔØ The global vegetation pattern across the Cretaceous–Paleogene mass extinc- tion interval: A template for other extinction events Vivi Vajda, Antoine Bercovici PII: S0921-8181(14)00147-7 DOI: doi: 10.1016/j.gloplacha.2014.07.014 Reference: GLOBAL 2154 To appear in: Global and Planetary Change Received date: 9 March 2013 Revised date: 21 July 2014 Accepted date: 30 July 2014 Please cite this article as: Vajda, Vivi, Bercovici, Antoine, The global vegetation pattern across the Cretaceous–Paleogene mass extinction interval: A template for other extinc- tion events, Global and Planetary Change (2014), doi: 10.1016/j.gloplacha.2014.07.014 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. ACCEPTED MANUSCRIPT The global vegetation pattern across the Cretaceous–Paleogene mass extinction interval: a template for other extinction events Vivi Vajda a,*, Antoine Bercovici a a Department of Geology, Lund University, Sölvegatan 12, 223 62 Lund, Sweden. *Corresponding author. Tel.: + 46 46 222 4635 E.mail address: [email protected]; (V. Vajda) ACCEPTED MANUSCRIPT ACCEPTED MANUSCRIPT 2 Abstract Changes in pollen and spore assemblages across the Cretaceous–Paleogene (K–Pg) boundary elucidate the vegetation response to a global environmental crisis triggered by an asteroid impact in Mexico 66 Ma. -
Emese Réka Bodor
Növényi reproduktív képletek a Mecseki Kőszén Formációból DOKTORI ÉRTEKEZÉS 2015 BODOR EMESE RÉKA ELTE TTK, Őslénytani Tanszék MFGI, Földtani és Geofizikai Gyűjteményi Főosztály Témavezetők: Dr. BARBACKA MARIA (Főmuzeológus, MTM, Növénytár) Dr. KÁZMÉR MIKLÓS (Tanszékvezető egyetemi tanár, ELTE, TTK, Őslénytani Tanszék) ELTE, TTK, Földtudományi Doktori Iskola Doktori iskola vezetője: Dr. NEMES- NAGY JÓZSEF Földtan Geofizika Programvezetője: Dr. MINDSZENTY ANDREA Bodor Emese Réka Növényi reproduktív képletek a Mecseki Kőszén Formációból Tartalomjegyzék A KUTATÁSI TÉMA ELŐZMÉNYEI ÉS CÉLKITŰZÉSEI .......................................................................... 3 FÖLDTANI HÁTTÉR .......................................................................................................................................... 5 ANYAG ÉS MÓDSZEREK ................................................................................................................................. 9 VIZSGÁLT ANYAG ............................................................................................................................................... 9 ANYAGVIZSGÁLATI MÓDSZEREK ......................................................................................................................... 9 Kutikula vizsgálati eljárások ......................................................................................................................... 9 SZEDIMENTOLÓGIAI VIZSGÁLATI MÓDSZEREK ................................................................................................. -
An Advanced Peltasperm Permoxylocarpus Trojanus Naug
ZOBODAT - www.zobodat.at Zoologisch-Botanische Datenbank/Zoological-Botanical Database Digitale Literatur/Digital Literature Zeitschrift/Journal: Wulfenia Jahr/Year: 2010 Band/Volume: 17 Autor(en)/Author(s): Naugolnykh Serge V., Oskolski Alexei A. Artikel/Article: An advanced peltasperm Permoxylocarpus trojanus Naug. from the Lower Permian of the Urals (Russia): an ancient case of entomophily in gymnosperms? 29-43 © Landesmuseum für Kärnten; download www.landesmuseum.ktn.gv.at/wulfenia; www.biologiezentrum.at Wulfenia 17 (2010): 29 – 43 Mitteilungen des Kärntner Botanikzentrums Klagenfurt An advanced peltasperm Permoxylocarpus trojanus Naug. from the Lower Permian of the Urals (Russia): an ancient case of entomophily in gymnosperms? Serge V. Naugolnykh & Alexei A. Oskolski Summary: The evolutionarily advanced gymnosperm of peltaspermalean affi nity Permoxylocarpus trojanus Naug. from the Lower Permian deposits of the Urals (Russia) is described. Female reproductive organs of P. trojanus are spherical, semi-closed, peltate capsules with 15 –16 enclosed seeds. Both macromorphology and microstructure, including epidermal-cuticular characters and the anatomical structure of conducting tissues, are characterized. Sterile leaves of Praephylladoderma leptoderma Naug., provisionally belonging to the same parent plant, are also described. Some aspects of peltasperm evolution during the Late Palaeozoic – Early Mesozoic are briefl y summarized. The occurrence of enclosed ovuliferous organs (capsules) in some peltasperms, the structure of their pollen grains as well as some palaeoentomological evidences suggest the gradual shift from anemophily to entomophily in evolution of these gymnosperms. Keywords: peltasperms, evolution, Permian, seed-bearing organs, preangiosperms, fossil records, entomophily Pteridosperms sensu lato were widely distributed seed plants during the Late Palaeozoic. This very diverse group is commonly regarded as a grade rather than a well-supported clade. -
Permian Extinction Event in Australia
PALAIOS, 2020, v. 35, 342–357 Research Article DOI: http://dx.doi.org/10.2110/palo.2020.007 DWELLING IN THE DEAD ZONE—VERTEBRATE BURROWS IMMEDIATELY SUCCEEDING THE END- PERMIAN EXTINCTION EVENT IN AUSTRALIA 1 1 1 2 3 3 STEPHEN MCLOUGHLIN, CHRIS MAYS, VIVI VAJDA, MALCOLM BOCKING, TRACY D. FRANK, AND CHRISTOPHER R. FIELDING 1Swedish Museum of Natural History, Svante Arrhenius v. 9, SE-104 05, Stockholm, Sweden 2Bocking Associates, 8 Tahlee Close, Castle Hill, NSW, Australia 3Department of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, 126 Bessey Hall, Lincoln, NE 68588-0340, USA email: [email protected] ABSTRACT: A distinctive burrow form, Reniformichnus australis n. isp., is described from strata immediately overlying and transecting the end-Permian extinction (EPE) horizon in the Sydney Basin, eastern Australia. Although a unique excavator cannot be identified, these burrows were probably produced by small cynodonts based on comparisons with burrows elsewhere that contain body fossils of the tracemakers. The primary host strata are devoid of plant remains apart from wood and charcoal fragments, sparse fungal spores, and rare invertebrate traces indicative of a very simplified terrestrial ecosystem characterizing a ‘dead zone’ in the aftermath of the EPE. The high-paleolatitude (~ 65–758S) setting of the Sydney Basin, together with its higher paleoprecipitation levels and less favorable preservational potential, is reflected by a lower diversity of vertebrate fossil burrows and body fossils compared with coeval continental interior deposits of the mid-paleolatitude Karoo Basin, South Africa. Nevertheless, these burrows reveal the survivorship of small tetrapods in considerable numbers in the Sydney Basin immediately following the EPE. -
Extinction and Recovery Patterns of the Vegetation Across
Review of Palaeobotany and Palynology 144 (2007) 99–112 www.elsevier.com/locate/revpalbo Extinction and recovery patterns of the vegetation across the Cretaceous–Palaeogene boundary — a tool for unravelling the causes of the end-Permian mass-extinction ⁎ Vivi Vajda a, , Stephen McLoughlin b a GeoBiosphere Science Centre, Lund University, Sölvegatan 12, SE-223 62, Lund, Sweden b School of Natural Resource Sciences, Queensland University of Technology, PO Box 2434, Brisbane, Q. 4001, Australia Received 22 December 2004; received in revised form 14 September 2005; accepted 14 September 2005 Available online 12 July 2006 Abstract High-resolution palynofloral signatures through the Cretaceous–Palaeogene boundary succession show several features in common with the Permian–Triassic transition but there are also important differences. Southern Hemisphere Cretaceous– Palaeogene successions, to date studied at high resolution only in New Zealand, reveal a diverse palynoflora abruptly replaced by fungi-dominated assemblages that are in turn succeeded by low diversity suites dominated by fern spores, then gymnosperm- and angiosperm-dominated palynofloras of equivalent diversity to those of the Late Cretaceous. This palynofloral signature is interpreted to represent instantaneous (days to months) destruction of diverse forest communities associated with the Chicxulub impact event. The pattern of palynofloral change suggests wholesale collapse of vascular plant communities and short-term proliferation of saprotrophs followed by relatively rapid successional recovery of pteridophyte and seed–plant communities. The Permian–Triassic transition records global devastation of gymnosperm-dominated forests in a short zone synchronous with one or more peaks of the fungal/algal palynomorph Reduviasporonites. This zone is typically succeeded by assemblages rich in lycophyte spores and/or acritarchs.