Podrobnosti záznamu

Název
    A Silurian oncocerid with preserved colour pattern and muscle scars (Nautiloidea)
Autor
    Manda, Štěpán
    Turek, Vojtěch
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Bulletin of Geosciences
Svazek/č.
    Roč. 84, č. 4
Strany
    12
Rok
    2009
Výraz tezauru
    Nautiloidea, Oncocerida, colour pattern, muscle scars, Silurian, Prague Basin, new taxa
Klíčové slovo
    Colour
    Muscle
    Nautiloidea
    Oncocerid
    Pattern
    Preserved
    Scars
    Silurian
Abstrakt (anglicky)
   New genus Euryrizocerina is striking for two features - the preservation of shell colouration and muscle attachment scars. These features are reliable for taxonomy and palaeoecology of nautiloids. The colour pattern consists of irregular pulsed transverse bands that differ from the colour patterns known in other oncocerids. Oncocerids exhibit multiple paired muscle scars and there is uncertainty whether these represent an original metamery or a derived feature. Euryrizocerina possesses four pairs of retractor muscle scars, but its ancestor possess multiple pairs of muscle scars around body-chamber. The high evolutionary plasticity of muscle attachments patterns suggests that the muscle complex and its attachment to the shell was under adaptive control and is more likely to reflect the form of the shell and the mode of life of the organism.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014