DOCSLIB.ORG

Lower Cretaceous, Jurassic(?), and Triassic Ostracoda from the Atlantic Coastal Region

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Lower Cretaceous, Jurassic(?), and Triassic Ostracoda from the Atlantic Coastal Region Lower Cretaceous, Jurassic(?), and Triassic Ostracoda From the Atlantic Coastal Region GEOLOGICAL SURVEY PROFESSIONAL PAPER 795 Lower Cretaceous, Jurassic(?), and Triassic Ostracoda From the Atlantic Coastal Region By FREDERICK M. SWAIN and PHILIP M. BROWN GEOLOGICAL SURVEY PROFESSIONAL PAPER 795 UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1972 UNITED STATES DEPARTMENT OF THE INTERIOR ROGERS C. B. MORTON, Secretary GEOLOGICAL SURVEY V. E. McKelvey, Director Library of Congress catalog-card No. 72-600289 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 Stock Number 2401-00250 CONTENTS Page Abstract _ _ ___ _ _ _ _ __ _ ___ __ _ __ _ ___ _ _ _ __ _ ___ _ _ __ _ _ _ __ ___ __ _ __ ___ ___ __ __ _ __ __ 1 Introduction ------------------------------------------------------------- 1 Triassic Ostracoda _ __ __ _ __ _ _ _ ____ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ __ _ _ _ _ _ _ _ _ ___ _ ___ _ __ _ _ 1 Jurassic ( ?) and Cretaceous Ostracoda --------------------------------- _____ 3 Chronostratigraphic framework ----------------------------------- _____ 3 lJnit II -------------------------------------------------------------- 4 lJnit G --------------------------------------------------------- _____ 10 lJnit F --------------------------------------------------------- _____ 11 lJnit E --------------------------------------------------------- _____ 11 Systematic descriptions _ __ _ __ _ _ _ _ __ _ __ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ __ _ __ _ _ _ _ _ __ _ _ _ __ 12 References _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ __ __ _ __ ___ __ 50 Index -------------------------------------------------------------------- 53 ILLUSTRATIONS [Plates 1-9 follow index; plate 10 in pocket] PLATE 1. Darwinula, Darwinula? Cytherella, Paracypris, Potamocypris?, and Cypridea. 2. Darwinula? and Darwinula. 3. Cypridea, Monoceratina? Pseudobythocythere? Dolocytheridea, Dolocytheridea?, and Asciocythere?. 4. Asciocythere? and Asciocythere. 5. Ascioc,ythere and Ovocytheridea?. 6. Fossocytheridea, Schuleridea, and Schuleridea?. 7. Schuleridea? Paraschuleridea, and Fabanella. 8. Metacytheropteron? Otocythere, Eocytheropteron, Eucytherura?, Juvenix, Hutsonia, and Hutsonia?. 9. Hutsonia, Protocythet·e, Protocythere? Cythereis, Klieana ?, Taxodiella, Mandelstarnia?, and Isocythereis?. 10. Correlation chart for the subsurface chronostratigraphic units of Jurassic ( ?) through Cretaceous age in the mid- dle Atlantic States. Page FIGURE 1. Location map ----------------------------------------------------------------------------------- 2 2. Cypridea (C.) dequeenensis Swain and Brown ----------------------------------------------------- 13 3. Darwinula rogersii (Jones) __ _ __ __ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ ___ __ _ _ _ __ _ _ _ _ _ __ _ ____ _ __ _ __ __ _____ ___ _ 16 4. Darwinula subquadrata Swain and Brown, n. sp --------------------------------------------------- 17 5. Darwinula? sp. 1 _ __ _ _ _ _ _ __ _ _ _ _ _ _ _ _ __ _ _ __ _ _ _ _ _ _ ___ _ ___ __ _ __ __ ___ __ ___ _ _ _ _ ___ _ _ _ _ _ ___ __ __ _ _ _ _ _ _ __ _ 17 6. Darwinula? sp. 2 ------------------------------------------------------------------------------- 18 7. Darwinula? sp. 3 -------------------------------------------------------------------------------- 18 8. Darwinula? sp. 4 ------------------------------------------------------------------------------- 19 9. Monoceratina? sp -------------------------------------------------------------------------------- 19 10. Pseudobythocythere? sp -------------------------------------------------------------------------- 20 11. Dolocytheridea? bosquetoidea Swain and Brown, n. sp ---------------------------------------------- 21 12. Asciocythere macropunctata Swain _______________________________________________ ----------------- 23 13. Asciocythere? rugosa, Swain and Brown, n. sp ----------------------------------------------------- 24 14. Schuleridea hatterasensis Swain ------------------------------------------------------------------ 28 15. Schuleridea? sp ---------------------___________________________ --------------------------------- 29 III IV CONTENTS Page FIGURE 16. Paraschuleridea posturnbonata. Swain and Brown, n. sp --------------------------------------------- 30 17. Fabanella lanceolata (Swain) ____________________________________________ --------_______________ _ 31 18. Fabanella legurninoidea (Swain) _________________________________________ --------_____ ----------__ 32 19. FabaneUa sp ------------------------------------------------------------------------------------ 33 20. Metacytheropteron? bicostatutn Swain and Brown, n. sp -------------------------------------------- 34 21. Otocythere sp ------------------------------··---------------------------------------------------- 35 22. Eucythenrra? sp _________ : _____________________________________________________________________ _ 38 23. Juvenix sp ------------------------------------------------------------------------------------- 39 24. Hutsonia blandoidea Swain and Brown, n. sp -----------------------------------------------------­ 40 25. Hutsonia collinsensis collinsensis Swain and Brown, n. E"p., n. subsp ----------------------------------- 41 26. Hutsonia collinsensis attenuata Swain and Brown, n. sub~p ______ ------------------------------------ 42 27. Hutsonia. collinsensis micropunctata Swain and Brown, n. subsp ------------------------------------­ 43 28. Protocythere? sp -------------------------------------------------------------------------------- 45 29. J(lieana? sp ------------------------------------------------------------------------------------ 46 30. Cythereis cf. C. dentonensis Alexander _________________________ ------------------------------------ 47 31. 1socythereis? sp ________________________________________ - ______ ---------------------·------------ 48 32. Taxodiella sp ----------------------------------------------------------------------------------- 50 TABLES Page TABLE 1. Stratigraphic distribution of the Mesozoic Ostracoda obtained from wells and described herein _________ 5 2. Well number, location, date drilled, elevation, depth, and stratigraphic data for the 46 wells from which the Ostracoda were obtained ----------------------------------------------------------------- 6 LOWER CRETACEOUS, JURASSIC(?}, AND TRIASSIC OSTRACODA FROM THE ATLANTIC COASTAL REGION By FREDERICK M. SwAIN and PHILIP M. BROWN ABSTRACT which extends from Long Island, N.Y. through North Carolina. The purpose of the program was to This paper describes, lists the subsurface occurrence, and establish and map permeability-distribution net­ gives the stratigraphic distribution of 15 new species and subspecies, 24 taxa in open nomenclatu~e, and 32 previously works within the sedimentary mass. These net­ described, referable, or affinitive species of Ostracoda recov­ works will be used in evaluating the nature and ered from 46 recently drilled wells located in the Atlantic potential of regional ground-water supplies. Paleon­ Coastal Plain of the United States. The Ostracoda occur tologic data, chiefly the occurrence and distribution chiefly in one or more of four letter-designated chronostrati­ of Ostracoda recovered from cores and cuttings, graphic units that have been mapped in the subsurface. One chronostratigraphic unit (Unit H) is Jurassic? and Creta­ were used to help map nine Mesozoic and eight ceous ip age; two chronostratigraphic units (Unit G and Unit Cenozoic chronostratigraphic units in the subsur­ F) are Early Cretaceous in age; and one chronostratigraphic face. Various species of Ostracoda, many of which unit (Unit E) is Late Cretaceous in age. Also, this paper are new, were recognized to characterize each of describes six species of Ostracoda, one of which is new, ob­ the units. tained from lacustrine shales of Late Triassic age at two ex­ posures in east-central North Carolina. In all, 77 taxa of In addition to listing the occurrence of some Os­ ostracodes are recorded in the collection described herein. tracoda of Mesozoic age described previously, this The following new species, new subspecies, and taxa in report describes 15 new species and subspecies that open nomenclature were recovered from chronostratigraphic occur chiefly in one or more of four of the chrono­ units mapped in the subsurface: Cytherella spp. 1 and 2, stratigraphic units that have been mapped. These Cypridea (C.) sp., Cypridea (C.) menevoides n. sp., Pota­ four chronostratigraphic units include one unit of mocypris? sp., Paracypris sp., Monoceratina? sp., Pseudoby­ Jurassic(?) and Cretaceous age, two units of Early thoc1ythere? sp., Dolocytheridea oertlii n. sp., Dolocytheridea? bosquetoidea. n. sp., Asciocythere? rugosa n. sp., Asciocythere Cretaceous age, and one unit of Late Cretaceous age. elongata n. sp., Ovocytheridea? sp., Schuleridea anterofossu­ The Ostracoda were obtained from a group of 46 lata n. sp., Schuleridea? sp., Pwraschule?·idea twifordensis n. wells (fig. 1 and table 2). Most of the wells were sp., Paraschuleridea postumbona.ta n. sp., Paraschuleridea drilled in connection with petroleum exploration. curta n. sp., Fabanella sp., Metacytheropte1·on? bicostafutn Also, this report describes six species of Ostracoda, n. sp., Otocythet·e sp., Juvem'x sp., Hutsonia collinsensis col­ linsensis n. sp., n. subsp., Hutsonia collinsensis attenuata n. one of which is new, that were obtained from the subsp., Hutsonia collinsensis micropun.ctata n.
Load more

Recommended publications
  • Ostracoda an Introduction.Pdf
    The Ostracoda (from Wikipedia, 5/5/2009: http://en.wikipedia.org/wiki/Ostracod) Ostracoda is a class of the Crustacea, sometimes known as the seed shrimp because of their appearance. Ostracods are small crustaceans, typically around one mm in size, but varying between 0.2 to 30 mm, laterally compressed and protected by a bivalve-like, chitinous or calcareous valve or "shell". The hinge of the two valves is in the upper, dorsal region of the body. Some 65,000 species (13,000 of which are extant taxa) have been identified, grouped into several orders. This group may not be monophyletic. Ostracod taxa are grouped into a Class based on gross morphology. Ecologically, marine ostracods can be part of the zooplankton or (most commonly) they are part of the benthos, living on or inside the upper layer of the sea floor. Many ostracods, especially the Podocopida, are also found in fresh water and some are known from humid continental forest soils. The body consists of a cephalon (head), separated from the thorax by a slight constriction. The segmentation is unclear. The abdomen is regressed or absent whereas the adult gonads are relatively large. There are 5–8 pairs of appendages. The branchial plates are responsible for oxygenation. The epidermal cells may also secrete calcium carbonate after the chitinous layer is formed, resulting in a chalk layer enveloped by chitin. This calcification is not equally pronounced in all orders. During every instar transition, the old carapace (chitinous and calcified) is rejected and a new, larger is formed and calcified. The outer lamella calcifies completely, while the inner lamella calcifies partially, with the rest remaining chitinous.
    [Show full text]
  • Volume 2, Chapter 10-2: Arthropods: Crustacea
    Glime, J. M. 2017. Arthropods: Crustacea – Ostracoda and Amphipoda. Chapt. 10-2. In: Glime, J. M. Bryophyte Ecology. Volume 2. 10-2-1 Bryological Interaction. Ebook sponsored by Michigan Technological University and the International Association of Bryologists. Last updated 19 July 2020 and available at <http://digitalcommons.mtu.edu/bryophyte-ecology2/>. CHAPTER 10-2 ARTHROPODS: CRUSTACEA – OSTRACODA AND AMPHPODA TABLE OF CONTENTS CLASS OSTRACODA ..................................................................................................................................... 10-2-2 Adaptations ................................................................................................................................................ 10-2-3 Swimming to Crawling ....................................................................................................................... 10-2-3 Reproduction ....................................................................................................................................... 10-2-3 Habitats ...................................................................................................................................................... 10-2-3 Terrestrial ............................................................................................................................................ 10-2-3 Peat Bogs ............................................................................................................................................ 10-2-4 Aquatic ...............................................................................................................................................
    [Show full text]
  • 24 Guide to Crustacea
    24 Guide to Crustacea. Fleas." They are abundant everywhere in ponds and ditches, and a few species are found in the sea. One of the commonest species in fresh water is Daphnia pulex, of which specimens are exhibited together with an enlarged draw- ing of the animal as seen under a low power of the microscope FIG. 10. Daphnia pulex. Female carrying eggs in the brood-chamber. Enlarged. [Table-case No. 1.] (Fig. 10). Leptodora kindtii is the largest species of the Order. It is found chiefly in lakes, and its glassy transparency makes it a very beautiful object when alive. It is exceptional in the small size of the carapace, which does not enclose the body and serves only as a brood-pouch. Ostracoda. 25 Sub-class II.—OSTRACODA. (Table-ease No. 1.) The number of somites, as indicated by the appendages, is smaller than in any other Crustacea, there being, at most, only two pairs of trunk-limbs behind those belonging to the head- region. The carapace forms a bivalved shell completely en- closing the body and limbs. There is a large, and often leg-like, palp on the mandible. The antennules and antennae are used for creeping or swimming. The Ostracoda (Fig. 10) are for the most part extremely minute animals, and only one or two of the larger species can be exhibited. They occur abundantly in fresh water and in FIG. 11. Shells of Ostracoda, seen from the side. A. Philomedes brenda (Myodocopa) ; B. Cypris fuscata (Podocopa); ('. Cythereis ornata (Podocopa): all much enlarged, n., Notch characteristic of the Myodocopa; e., the median eye ; a., mark of attachment of the muscle connecting the two valves of the shell.
    [Show full text]
  • 15 International Symposium on Ostracoda
    Berliner paläobiologische Abhandlungen 1-160 6 Berlin 2005 15th International Symposium on Ostracoda In Memory of Friedrich-Franz Helmdach (1935-1994) Freie Universität Berlin September 12-15, 2005 Abstract Volume (edited by Rolf Kohring and Benjamin Sames) 2 ---------------------------------------------------------------------------------------------------------------------------------------- Preface The 15th International Symposium on Ostracoda takes place in Berlin in September 2005, hosted by the Institute of Geological Sciences of the Freie Universität Berlin. This is the second time that the International Symposium on Ostracoda has been held in Germany, following the 5th International Symposium in Hamburg in 1974. The relative importance of Ostracodology - the science that studies Ostracoda - in Germany is further highlighted by well-known names such as G.W. Müller, Klie, Triebel and Helmdach, and others who stand for the long tradition of research on Ostracoda in Germany. During our symposium in Berlin more than 150 participants from 36 countries will meet to discuss all aspects of living and fossil Ostracoda. We hope that the scientific communities working on the biology and palaeontology of Ostracoda will benefit from interesting talks and inspiring discussions - in accordance with the symposium's theme: Ostracodology - linking bio- and geosciences We wish every participant a successful symposium and a pleasant stay in Berlin Berlin, July 27th 2005 Michael Schudack and Steffen Mischke CONTENT Schudack, M. and Mischke, S.: Preface
    [Show full text]
  • Crustacea, Ostracoda), from Christmas Island (Indian Ocean) with Some Considerations on the Morphological Evolution of Ancient Asexuals
    Belg. J. Zool., 141 (2) : 55-74 July 2011 Description of a new genus and two new species of Darwinulidae (Crustacea, Ostracoda), from Christmas Island (Indian Ocean) with some considerations on the morphological evolution of ancient asexuals Giampaolo Rossetti1*, Ricardo L. Pinto 2 & Koen Martens 3 1 University of Panna, Department of Enviromnental Sciences, Viale G.P. Usberti 33 A, 1-43100 Panna, Italy 2 University of Brasilia, Institute of Geosciences, Laboratory of Micropaleontology, ICC, Campus Universitário Darcy Ribeiro Asa Norte, 70910-900 Brasilia, DF, Brazil 3 Royal Belgian Institute of Natural Sciences, Freshwater Biology, Vautierstraat 29, B-1000 Brussels, Belgium, and University of Ghent, Department of Biology, K.L. Ledeganckstraat 35, B-9000 Gent, Belgimn * Conesponding author: Giampaolo Rossetti. Mail: giampaolo.rosscttin unipr.it ABSTRACT. Darwinulidae is believed to be one of the few metazoan taxa in which fully asexual reproduction might have persisted for millions of years. Although rare males in a single darwinulid species have recently been found, they may be non-functional atavisms. The representatives of this family are characterized by a slow evolutionary rate, resulting in a conservative morphology in the different lineages over long time frames and across wide geographic ranges. Differences between species and genera, although often based on small details of valve morphology and chaetotaxy, are nevertheless well-recognizable. Five recent genera ( Darwinula, Alicenula, Vestcdemilct, Penthesilemila and Microdarwimda) and about 35 living species, including also those left in open nomenclature, are included in this family. Previous phylogenetic analyses using both morphological characters and molecular data confirmed that the five genera are good phyletic units.
    [Show full text]
  • Taxonomy of Quaternary Deep-Sea Ostracods from the Western North Atlantic Ocean
    University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln USGS Staff -- Published Research US Geological Survey 2009 Taxonomy Of Quaternary Deep-Sea Ostracods From The Western North Atlantic Ocean Moriaki Yasuhara National Museum of Natural History, Smithsonian Institution, [email protected] Hisayo Okahashi National Museum of Natural History, Smithsonian Institution, [email protected] Thomas M. Cronin U.S. Geological Survey, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/usgsstaffpub Part of the Earth Sciences Commons Yasuhara, Moriaki; Okahashi, Hisayo; and Cronin, Thomas M., "Taxonomy Of Quaternary Deep-Sea Ostracods From The Western North Atlantic Ocean" (2009). USGS Staff -- Published Research. 242. https://digitalcommons.unl.edu/usgsstaffpub/242 This Article is brought to you for free and open access by the US Geological Survey at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in USGS Staff -- Published Research by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. [Palaeontology, Vol. 52, Part 4, 2009, pp. 879–931] TAXONOMY OF QUATERNARY DEEP-SEA OSTRACODS FROM THE WESTERN NORTH ATLANTIC OCEAN by MORIAKI YASUHARA*, HISAYO OKAHASHI* and THOMAS M. CRONIN *Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, MRC 121, PO Box 37012, Washington, DC 20013-7012, USA; e-mails: [email protected] or [email protected] (M.Y.), [email protected] (H.O.) U.S. Geological Survey,
    [Show full text]
  • Ostracoda and Foraminifera from Paleocene (Olinda Well), Paraíba Basin, Brazilian Northeast
    Anais da Academia Brasileira de Ciências (2017) 89(3): 1443-1463 (Annals of the Brazilian Academy of Sciences) Printed version ISSN 0001-3765 / Online version ISSN 1678-2690 http://dx.doi.org/10.1590/0001-3765201720160768 www.scielo.br/aabc | www.fb.com/aabcjournal Ostracoda and foraminifera from Paleocene (Olinda well), Paraíba Basin, Brazilian Northeast ENELISE K. PIOVESAN¹, ROBBYSON M. MELO¹, FERNANDO M. LOPES², GERSON FAUTH³ and DENIZE S. COSTA³ ¹Laboratório de Geologia Sedimentar e Ambiental/LAGESE, Universidade Federal de Pernambuco, Departamento de Geologia, Centro de Tecnologia e Geociências, Av. Acadêmico Hélio Ramos, s/n, 50740-530 Recife, PE, Brazil ²Instituto Tecnológico de Micropaleontologia/itt Fossil, Universidade do Vale do Rio dos Sinos/UNISINOS, Av. Unisinos, 950, 93022-750 São Leopoldo, RS, Brazil ³PETROBRAS/CENPES/PDEP/BPA, Rua Horácio Macedo, 950, Cidade Universitária, Ilha do Fundão, Prédio 32, 21941-915 Rio de Janeiro, RJ, Brazil Manuscript received on November 7, 2016; accepted for publication on March 16, 2017 ABSTRACT Paleocene ostracods and planktonic foraminifera from the Maria Farinha Formation, Paraíba Basin, are herein presented. Eleven ostracod species were identified in the genera Cytherella Jones, Cytherelloidea Alexander, Eocytheropteron Alexander, Semicytherura Wagner, Paracosta Siddiqui, Buntonia Howe, Soudanella Apostolescu, Leguminocythereis Howe and, probably, Pataviella Liebau. The planktonic foraminifera are represented by the genera Guembelitria Cushman, Parvularugoglobigerina Hofker, Woodringina Loeblich and Tappan, Heterohelix Ehrenberg, Zeauvigerina Finlay, Muricohedbergella Huber and Leckie, and Praemurica Olsson, Hemleben, Berggren and Liu. The ostracods and foraminifera analyzed indicate an inner shelf paleoenvironment for the studied section. Blooms of Guembelitria spp., which indicate either shallow environments or upwelling zones, were also recorded reinforcing previous paleoenvironmental interpretations based on other fossil groups for this basin.
    [Show full text]
  • Ostracoda, Crustacea) in Turkey
    LIMNOFISH-Journal of Limnology and Freshwater Fisheries Research 5(1): 47-59 (2019) Fossil and Recent Distribution and Ecology of Ancient Asexual Ostracod Darwinula stevensoni (Ostracoda, Crustacea) in Turkey Mehmet YAVUZATMACA * , Okan KÜLKÖYLÜOĞLU Department of Biology, Faculty of Arts and Science, Bolu Abant İzzet Baysal University, Turkey ABSTRACT ARTICLE INFO In order to determine distribution, habitat and ecological preferences of RESEARCH ARTICLE Darwinula stevensoni, data gathered from 102 samples collected in Turkey between 2000 and 2017 was evaluated. A total of 1786 individuals of D. Received : 28.08.2018 stevensoni were reported from eight different aquatic habitats in 14 provinces in Revised : 21.10.2018 six of seven geographical regions of Turkey. Although there are plenty of samples Accepted : 30.10.2018 from Central Anatolia Region, recent form of the species was not encountered. Unlike recent, fossil forms of species were encountered in all geographic regions Published : 25.04.2019 except Southeastern Anatolia. The oldest fossil record in Turkey was reported from the Miocene period (ca 23 mya). Species occurred in all climatic seasons in DOI:10.17216/LimnoFish.455722 Turkey. D. stevensoni showed high optimum and tolerance levels to different ecological variables. Results showed a positive and negative significant * CORRESPONDING AUTHOR correlations of the species with pH (P<0.05) and elevation (P<0.01), respectively. [email protected] It seems that the ecological preferences of the species are much wider than Phone : +90 537 769 46 28 previously known. Our results suggest that if D. stevensoni is used to estimate past and present environmental conditions, attention and care should be paid on its ecology and distribution.
    [Show full text]
  • On Two New Species of Darwinula BRADY & ROBERTSON, 1885
    BULLETIN DE L'INSTITUT ROYAL DES SCIENCES NATURELLES DE BELGIQUE, BIOLOGIE, 67: 57-66, 1997 '' BULLETIN VAN HET KONrNKLIJK BELGISCH INSTITUUT VOOR NATUURWETENSCHAPPEN, BIOLOGIE, 67: 57-66, 1997 On two new species of Darwinula BRADY & ROBERTSON, 1885 (Crustacea, Ostracoda) from South African dolomitic springs by Koen MARTENS & Giampaolo ROSSETTI Abstract 1968 (represented by only one extant spec1es, M. zimmeri) and the nominate genus Danvinula BRADY Two new Recent darwinulid ostrac ds (Darwinu/a molopoensis & ROB ERTSON, 1885. SOHN (1987) reported 23 living spec. nov. and D. inversa spec. nov.) are described from dolomitic species and 2 subspecies for Darwinula (D. dicastrii springs in the former North West Province (the former Transvaal), LOFFLER was missing from this list); amon·g these RSA. The two new taxa can be distinguished by both soft part species, only D. stevensoni can be considered truly and valve morphology. Darwinula molopoensis spec. nov. belongs ubiquitous. to the D. africana lineage (with D. incon5picua KuE as its Except for a few papers on D. stevensoni (McGREGOR & closest relative), D. inversa spec. nov. belongs into the D. serricaudata group. The synonymy of D. serricaudata espinosa WETZEL 1968, MCGREGOR 1969; RANTA, 1979), little is PINTO & KOTZIAN, 1961 with D. serricaudata KLIE, 1935 is known on the biology and ecology of the Darwinuloidea. discussed. Also taxonomic relationships within this group remain Key words: Ostracods, Darwinu/a mo/opoensis spec. nov., " "unclear, in s'pite of valuable contributions by DAN IELOPOL Darwinula inversa spec. nov., morphology, taxonomy, ancient (1968, 1970, 1980). Indeed, the morphological uniformity asexuals, parthenogenesis, biodiversity. of the Darwinuloidea makes it difficult to single out unequivocal characters suitable for discriminating species and genera.
    [Show full text]
  • Crustacea, Ostracoda)
    First record and detailed description of the male of Ilyocypris inermis Kaufmann, 1900 (Crustacea, Ostracoda) Turk J Zool 2012; 36(4): 484-495 © TÜBİTAK Research Article doi:10.3906/zoo-1012-78 First record and detailed description of the male of Ilyocypris inermis Kaufmann, 1900 (Crustacea, Ostracoda) Necmettin SARI1, Okan KÜLKÖYLÜOĞLU1,2,*, Derya AKDEMİR3 1Abant İzzet Baysal University, Department of Biology No.18, Gölköy 14280 Bolu - TURKEY 2Abant İzzet Baysal University, Department of Biology, Hydrobiology Section No.18, 14280 Gölköy, Bolu - TURKEY 3Marmara University, Faculty of Arts and Science, Department of Biology, 34722, İstanbul - TURKEY Received: 30.12.2010 Abstract: Bisexual populations of Ilyocypris inermis Kaufmann, 1900 were reported for the fi rst time from 5 diff erent aquatic bodies in Bolu and Erzincan (Turkey). Th e males were compared with the males of the other 11 species of the genus Ilyocypris (I. australiensis, I. biplicata, I. decipiens, I. dentifera, I. divisa, I. fallax, I. getica, I. gibba, I. lacustris, I. mongolica, and I. monstrifi ca) and described based on examinations of the soft body parts (e.g., hemipenis, legs, clasping organs) and valves. Ecological characteristics of habitats where the bisexual populations found were discussed for future studies. Key words: Taxonomy, morphology, bisexual population, distribution, Anatolia Ilyocypris inermis Kaufmann, 1900 (Crustacea, Ostracoda) erkeğinin ilk kez rapor edilişi ve detaylı tanımlanması Özet: Ilyocypris inermis’in Kaufmann, 1900 biseksüel populasyonu Bolu ve Erzincan’daki (Türkiye) beş farklı sucul ortamdan ilk kez kayıt edilmiştir. Erkekler bu cinse ait erkekleri olan diğer 11 türle (I. australiensis, I. biplicata, I. decipiens, I. dentifera, I. divisa, I.
    [Show full text]
  • Data Report: Pliocene and Pleistocene Deep-Sea Ostracods from Integrated
    Tada, R., Murray, R.W., Alvarez Zarikian, C.A., and the Expedition 346 Scientists Proceedings of the Integrated Ocean Drilling Program, Volume 346 Data report: Pliocene and Pleistocene deep-sea ostracods from Integrated Ocean Drilling Program Site U1426 (Expedition 346)1 Katsura Yamada,2 Kentaro Kuroki,3 and Tatsuhiko Yamaguchi4 Chapter contents Abstract Abstract . 1 Little is known about fossil ostracods from deep-sea drilling sites in the marginal sea bordered by the Eurasian continent, the Ko- Introduction . 1 rean Peninsula, and the Japanese Islands. This report presents tax- Site location and setting . 2 onomic descriptions for the Pliocene and early Pleistocene deep- Material and methods. 2 sea ostracods at Integrated Ocean Drilling Program Expedition Results . 2 346 Site U1426 on the Oki Ridge in the marginal sea. We found Acknowledgments. 2 23 species and 12 genera in discrete core samples. The ostracods References . 2 constitute taxa that dwell under the Tsushima Warm Current and Figure. 7 the Japan Sea Intermediate-Proper Water. We present taxonomic Tables. 8 summaries of ostracod species distribution and ecology in addi- Plates . 15 tion to scanning electron microscopic images. Taxonomic notes . 18 Introduction Previously, Pliocene and Pleistocene ostracods from the marginal sea were investigated using specimens from mainly outcrops ex- posed in the marginal sea side of the Japanese Islands. Most of these studies examined shallow-marine ostracods from the Setana (Hayashi, 1988), Omma (Ozawa and Kamiya, 2001, 2005), Yabuta (Cronin et al., 1994), Mita (Goto et al., 2014b), Shichiba (Ozawa, 2010; Ishida et al., 2012), and Sasaoka (Irizuki, 1989; Yamada et al., 2002) formations.
    [Show full text]
  • Biodiversity from Caves and Other Subterranean Habitats of Georgia, USA
    Kirk S. Zigler, Matthew L. Niemiller, Charles D.R. Stephen, Breanne N. Ayala, Marc A. Milne, Nicholas S. Gladstone, Annette S. Engel, John B. Jensen, Carlos D. Camp, James C. Ozier, and Alan Cressler. Biodiversity from caves and other subterranean habitats of Georgia, USA. Journal of Cave and Karst Studies, v. 82, no. 2, p. 125-167. DOI:10.4311/2019LSC0125 BIODIVERSITY FROM CAVES AND OTHER SUBTERRANEAN HABITATS OF GEORGIA, USA Kirk S. Zigler1C, Matthew L. Niemiller2, Charles D.R. Stephen3, Breanne N. Ayala1, Marc A. Milne4, Nicholas S. Gladstone5, Annette S. Engel6, John B. Jensen7, Carlos D. Camp8, James C. Ozier9, and Alan Cressler10 Abstract We provide an annotated checklist of species recorded from caves and other subterranean habitats in the state of Georgia, USA. We report 281 species (228 invertebrates and 53 vertebrates), including 51 troglobionts (cave-obligate species), from more than 150 sites (caves, springs, and wells). Endemism is high; of the troglobionts, 17 (33 % of those known from the state) are endemic to Georgia and seven (14 %) are known from a single cave. We identified three biogeographic clusters of troglobionts. Two clusters are located in the northwestern part of the state, west of Lookout Mountain in Lookout Valley and east of Lookout Mountain in the Valley and Ridge. In addition, there is a group of tro- globionts found only in the southwestern corner of the state and associated with the Upper Floridan Aquifer. At least two dozen potentially undescribed species have been collected from caves; clarifying the taxonomic status of these organisms would improve our understanding of cave biodiversity in the state.
    [Show full text]