{"product_id":"lower-ordovician-trilobites-of-the-kirtonryggen-formation-spitsbergen-isbn-9781118825396","title":"Lower Ordovician trilobites of the Kirtonryggen Formation, Spitsbergen","description":"\u003cp\u003eThis monograph describes early \u003ci\u003eOrdovician (Ibexian: Tremadocian–early Floian) trilobites\u003c\/i\u003e from Northern Spitsbergen from the section through the Kirtonryggen Formation adjacent to Hinlopen Strait. The Formation is divided into three Members, each with distinct trilobites collectively representing the fullest known succession from the Bathyurid biofacies of the eastern Laurentian carbonate platform. Previous research on the Ordovician of Spitsbergen is summarised and correlations with similar faunas previously described from Canada, Greenland, western Newfoundland, Vermont–New York State, Oklahoma and Missouri are discussed. Taxonomic problems are discussed in detail leading to the recognition of 53 species, of which 15 are new, belonging to 31 genera including four new. Twenty-four taxa are described under open or tentative nomenclature. The lower Member yields the earliest known occurrences of the \u003ci\u003eIllaenoidea, Proetoidea and Scutelluoidea\u003c\/i\u003e, supporting the hypotheses relating the origin of new major clades to inshore habitats.\u003c\/p\u003e Introduction 2 \u003cp\u003eSummary of previous research on the Ordovician of Spitsbergen 3\u003c\/p\u003e \u003cp\u003eStratigraphy of the Kirtonryggen Formation 4\u003c\/p\u003e \u003cp\u003eStratigraphic sub-divisions and age 4\u003c\/p\u003e \u003cp\u003eTremadocian–Floian boundary 9\u003c\/p\u003e \u003cp\u003eCorrelation with other areas of Ordovician Laurentia 10\u003c\/p\u003e \u003cp\u003eGreenland 11\u003c\/p\u003e \u003cp\u003eCanada 12\u003c\/p\u003e \u003cp\u003eNorthwest Scotland 13\u003c\/p\u003e \u003cp\u003eUSA 13\u003c\/p\u003e \u003cp\u003eOccurrence of trilobites in the Kirtonryggen Formation 15\u003c\/p\u003e \u003cp\u003eField occurrence 15\u003c\/p\u003e \u003cp\u003eBiofacies and biogeography 15\u003c\/p\u003e \u003cp\u003ePeculiarities of the Spitsbergen faunas 16\u003c\/p\u003e \u003cp\u003eEastern and western Laurentia 17\u003c\/p\u003e \u003cp\u003eOrigin of major trilobite clades 18\u003c\/p\u003e \u003cp\u003eTh e family Bathyuridae 19\u003c\/p\u003e \u003cp\u003eTh e problem of type species 20\u003c\/p\u003e \u003cp\u003eMorphology of Bathyuridae 21\u003c\/p\u003e \u003cp\u003eSystematic Palaeontology 23\u003c\/p\u003e \u003cp\u003eOrder Aulacopleurida Adrain, 2011 23\u003c\/p\u003e \u003cp\u003eFamily Hystricuridae Hupé, 1953 23\u003c\/p\u003e \u003cp\u003eGenus Svalbardicurus ngen 23\u003c\/p\u003e \u003cp\u003eSvalbardicurus delicatus nsp 24\u003c\/p\u003e \u003cp\u003eGenus Hystricurus Raymond, 1913 26\u003c\/p\u003e \u003cp\u003eHystricurus cfHystricurus spnovB Adrain et al., 2003 26\u003c\/p\u003e \u003cp\u003eHystricurus sp1 27\u003c\/p\u003e \u003cp\u003eOrder Proetida Fortey \u0026amp; Owens, 1975 28\u003c\/p\u003e \u003cp\u003eFamily Bathyuridae Walcott, 1886 28\u003c\/p\u003e \u003cp\u003eSub-family Bathyurinae Walcott, 1886 28\u003c\/p\u003e \u003cp\u003eGenus Bolbocephalus Whitfi eld, 1890 28\u003c\/p\u003e \u003cp\u003eBolbocephalus gunnari nsp 30\u003c\/p\u003e \u003cp\u003eBolbocephalus convexus (Billings, 1865) 31\u003c\/p\u003e \u003cp\u003eBolbocephalus stclairi Cullison, 1944 33\u003c\/p\u003e \u003cp\u003eBolbocephalus spcfBkindlei Boyce, 1989 35\u003c\/p\u003e \u003cp\u003eGenus Catochia Fortey, 1979 35\u003c\/p\u003e \u003cp\u003eCatochia hinlopensis nsp 35\u003c\/p\u003e \u003cp\u003eCatochia ornata Fortey, 1979 37\u003c\/p\u003e \u003cp\u003eGenus Jeffersonia Poulsen, 1927 37\u003c\/p\u003e \u003cp\u003eJeffersonia striagena nsp 38\u003c\/p\u003e \u003cp\u003eJeffersonia viator nsp 42\u003c\/p\u003e \u003cp\u003eJeffersonia timon (Billings, 1865) 44\u003c\/p\u003e \u003cp\u003e‘Jeffersonia’ aff Jgranosa Cullison, 1944 46\u003c\/p\u003e \u003cp\u003eGenus Peltabellia Whittington, 1953 46\u003c\/p\u003e \u003cp\u003ePeltabellia glabra nsp 47\u003c\/p\u003e \u003cp\u003eGenus Petigurus Raymond, 1913 49\u003c\/p\u003e \u003cp\u003ePetigurus nero (Billings, 1865) 49\u003c\/p\u003e \u003cp\u003ePetigurus groenlandicus Poulsen, 1937 50\u003c\/p\u003e \u003cp\u003eGenus Psalikilopsis Ross, 1953 52\u003c\/p\u003e \u003cp\u003ePsalikilopsis nspaff Pcuspicaudata Ross, 1953 53\u003c\/p\u003e \u003cp\u003eBathyurine ngennspA 54\u003c\/p\u003e \u003cp\u003eSub-family Bathyurellinae Hupé, 1953 55\u003c\/p\u003e \u003cp\u003eGenus Bathyurellus Billings, 1865 55\u003c\/p\u003e \u003cp\u003eBathyurellus abruptus Billings, 1865 56\u003c\/p\u003e \u003cp\u003eBathyurellus diclementsae nsp 57\u003c\/p\u003e \u003cp\u003eGenus Benthamaspis Poulsen, 1946 60\u003c\/p\u003e \u003cp\u003eBenthamaspis gibberula (Billings, 1865) 60\u003c\/p\u003e \u003cp\u003eBenthamaspis conica Fortey, 1979 62\u003c\/p\u003e \u003cp\u003eGenus Ceratopeltis Poulsen, 1937 63\u003c\/p\u003e \u003cp\u003eCeratopeltis cfCbatchensis Adrain \u0026amp; Westrop, 2005 63\u003c\/p\u003e \u003cp\u003eGenus Chapmanopyge ngen 63\u003c\/p\u003e \u003cp\u003eChapmanopyge cfsp1 (Loch, 2007) 65\u003c\/p\u003e \u003cp\u003eChapmanopyge ‘amplimarginiata’ (Billings, 1865) 65\u003c\/p\u003e \u003cp\u003eChapmanopyge cfCsanddoelaensis (Adrain \u0026amp; Westrop, 2005) 67\u003c\/p\u003e \u003cp\u003eChapmanopyge nspA 68\u003c\/p\u003e \u003cp\u003eGenus Grinnellaspis Poulsen, 1946 68\u003c\/p\u003e \u003cp\u003eGrinnellaspis newfoundlandensis Boyce, 1989 68\u003c\/p\u003e \u003cp\u003eGenus Harlandaspis ngen 68\u003c\/p\u003e \u003cp\u003eHarlandaspis elongata nsp 71\u003c\/p\u003e \u003cp\u003eGenus Licnocephala Ross, 1951 74\u003c\/p\u003e \u003cp\u003eLicnocephala brevicauda (Poulsen, 1937) 74\u003c\/p\u003e \u003cp\u003eLicnocephala nspA 75\u003c\/p\u003e \u003cp\u003eLicnocephala nspB 76\u003c\/p\u003e \u003cp\u003eLicnocephala? nspC 76\u003c\/p\u003e \u003cp\u003eGenus Punka Fortey, 1979 76\u003c\/p\u003e \u003cp\u003ePunka latissima nsp 77\u003c\/p\u003e \u003cp\u003ePunka fl abelliformis Fortey, 1979 79\u003c\/p\u003e \u003cp\u003eGenus Uromystrum Whittington, 1953 80\u003c\/p\u003e \u003cp\u003eUromystrum affi ne (Poulsen, 1937) 81\u003c\/p\u003e \u003cp\u003eUromystrum aff Uaffine (Poulsen, 1937) 84\u003c\/p\u003e \u003cp\u003eUromystrum drepanon nsp 85\u003c\/p\u003e \u003cp\u003eFamily Dimeropygidae Hupé, 1955 86\u003c\/p\u003e \u003cp\u003eGenus Ischyrotoma Raymond, 1925 86\u003c\/p\u003e \u003cp\u003eIschyrotoma parallela (Boyce,1989) 87\u003c\/p\u003e \u003cp\u003eIschyrotoma nspA 89\u003c\/p\u003e \u003cp\u003eFamily Proetidae Salter, 1864 90\u003c\/p\u003e \u003cp\u003eGenus Phaseolops Whittington, 1963 90\u003c\/p\u003e \u003cp\u003ePhaseolops? bobowensi nsp 90\u003c\/p\u003e \u003cp\u003eFamily Telephinidae Marek, 1952 92\u003c\/p\u003e \u003cp\u003eGenus Carolinites Kobayashi, 1940 92\u003c\/p\u003e \u003cp\u003eCarolinites? nspA 92\u003c\/p\u003e \u003cp\u003eOrder Corynexochida Kobayashi, 1935 94\u003c\/p\u003e \u003cp\u003eFamily Illaenidae Hawle \u0026amp; Corda, 1847 94\u003c\/p\u003e \u003cp\u003eGenus Illaenus Dalman, 1827 94\u003c\/p\u003e \u003cp\u003eSubgenus Illaenus (Parillaenus) Jaanusson, 1954 94\u003c\/p\u003e \u003cp\u003eIllaenus (Parillaenus) primoticus nsp 94\u003c\/p\u003e \u003cp\u003eFamily Leiostegiidae Bradley, 1925 96\u003c\/p\u003e \u003cp\u003eGenus Leiostegium Raymond, 1913 96\u003c\/p\u003e \u003cp\u003eLeiostegium spongiosum nsp 96\u003c\/p\u003e \u003cp\u003eFamily Styginidae Vogdes, 1890 98\u003c\/p\u003e \u003cp\u003eGenus Raymondaspis P¡ribyl, 1948 98\u003c\/p\u003e \u003cp\u003eRaymondaspis? pingpong nsp 98\u003c\/p\u003e \u003cp\u003eOrder Asaphida Salter, 1864 100\u003c\/p\u003e \u003cp\u003eSuperfamily Asaphoidea Salter, 1864 100\u003c\/p\u003e \u003cp\u003eFamily Asaphidae Salter, 1864 100\u003c\/p\u003e \u003cp\u003eGenus Lachnostoma Ross, 1951 100\u003c\/p\u003e \u003cp\u003eLachnostoma platypyga nsp 101\u003c\/p\u003e \u003cp\u003eGenus Stenorhachis Hintze \u0026amp; Jaanusson, 1956 102\u003c\/p\u003e \u003cp\u003eStenorhachis nspA 102\u003c\/p\u003e \u003cp\u003eFamily Remopleurididae Hawle \u0026amp; Corda, 1847 104\u003c\/p\u003e \u003cp\u003eGenus Eorobergia Cooper, 1953 104\u003c\/p\u003e \u003cp\u003eEorobergia nspA 104\u003c\/p\u003e \u003cp\u003eSuperfamily Cyclopygoidea Raymond, 1925 105\u003c\/p\u003e \u003cp\u003eFamily Symphysurinidae Kobayashi, 1955 105\u003c\/p\u003e \u003cp\u003eGenus Eurysymphysurina ngen 105\u003c\/p\u003e \u003cp\u003eEurysymphysurina spora nsp 106\u003c\/p\u003e \u003cp\u003eGenus Randaynia Boyce, 1989 107\u003c\/p\u003e \u003cp\u003eRandaynia nspA 108\u003c\/p\u003e \u003cp\u003eOrder Phacopida Salter, 1864 110\u003c\/p\u003e \u003cp\u003eFamily Pilekiidae Sdzuy, 1955 110\u003c\/p\u003e \u003cp\u003eGenus Pilekia Barton, 1915 110\u003c\/p\u003e \u003cp\u003ePilekia cfPtrio Hintze, 1953 110\u003c\/p\u003e \u003cp\u003eIncertae Ordinis 111\u003c\/p\u003e \u003cp\u003eFamily Shumardiidae Lake, 1907 111\u003c\/p\u003e \u003cp\u003eGenus Conophrys Callaway, 1877 111\u003c\/p\u003e \u003cp\u003eConophrys sp1 111\u003c\/p\u003e \u003cp\u003eIncertae sedis 111\u003c\/p\u003e \u003cp\u003eGenet spindet1 111\u003c\/p\u003e \u003cp\u003eGenet spindet2 111\u003c\/p\u003e \u003cp\u003eProetid metaprotaspis 112\u003c\/p\u003e \u003cp\u003eAcknowledgements 112\u003c\/p\u003e \u003cp\u003eReferences 112\u003c\/p\u003e \u003cb\u003eProfessor Richard Fortey\u003c\/b\u003e, F.R.S. is Merit Researcher at the Department of Palaeontology, Natural History Museum.","brand":"Wiley-Blackwell","offers":[{"title":"Default Title","offer_id":47989544747237,"sku":"NP9781118825396","price":45.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1842\/7735\/files\/9781118825396.jpg?v=1761784536","url":"https:\/\/k12savings.com\/products\/lower-ordovician-trilobites-of-the-kirtonryggen-formation-spitsbergen-isbn-9781118825396","provider":"K12savings","version":"1.0","type":"link"}