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Silurian tarphycerid Discoceras (Cephalopoda, Nautiloidea): systematics, embryonic development and paleoecology

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F18%3A00000001" target="_blank" >RIV/00025798:_____/18:00000001 - isvavai.cz</a>

  • Alternative codes found

    RIV/00023272:_____/18:10133999

  • Result on the web

    <a href="http://dx.doi.org/10.1017/jpa.2017.122" target="_blank" >http://dx.doi.org/10.1017/jpa.2017.122</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1017/jpa.2017.122" target="_blank" >10.1017/jpa.2017.122</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Silurian tarphycerid Discoceras (Cephalopoda, Nautiloidea): systematics, embryonic development and paleoecology

  • Original language description

    Tarphycerids were diverse and abundant in Ordovician marine faunas. Beginning at the Late Ordovician extinction, the diversity of tarphycerids declined throughout the Silurian, until their extinction in the latest Silurian. Two genera survived the Late Ordovician extinction: Trocholites Conrad, 1838 (from which Ophioceras Barrande, 1865 probably diverged) and Discoceras Barrande, 1867 (= Graftonoceras Foerste, 1925). Discoceras graftonense (Meek and Worthen, 1870), so far known from the US, China, and Australia, is recorded from the Silurian of Bohemia and Gotland. Discoceras stridsbergi n. sp., D. lindstroemi n. sp., and D. sp. indet. from the Wenlock of Gotland and D. amissus (Barrande, 1865) from the Llandovery of Bohemia are all endemic species probably derived from D. graftonense. The distribution of D. graftonense and the origin of four species of Discoceras in the latest Sheinwoodian and early Homerian represent the last diversification and dispersion of the Tarphycerida. No tarphycerid species originated after the mid-Homerian extinction (Mulde and Lundgreni events). Silurian Discoceras retained the morphology and habitats of their Ordovician ancestors. The hatching time and autecology of juveniles has remained unclear. Evidence from the material studied suggests that juveniles were planktonic in habit possessing a minute curved shell with few phragmocone chambers. Discoceras lindstroemi is exceptional owing to its heteromorphic planispiral shell with coiling that changed during ontogeny resulting in a changing aperture orientation and decreased maneuverability.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10505 - Geology

Result continuities

  • Project

    <a href="/en/project/GA14-16124S" target="_blank" >GA14-16124S: Refinement of lower Silurian chronostratigraphy: proposal of new GSSPs of the Aeronian and Homerian stages</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Journal of Paleontology

  • ISSN

    0022-3360

  • e-ISSN

  • Volume of the periodical

    92

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    20

  • Pages from-to

    412-431

  • UT code for WoS article

    000431786600007

  • EID of the result in the Scopus database

    2-s2.0-85045893764