Podrobnosti záznamu

Název
    Late Cretaceous nautilid beaks from near-shore/shallow water deposits of the Bohemian Cretaceous Basin (Czech Republic)
Autor
    Frank, Jiří
    Košťák, Martin
    Marek, Jaroslav
    Mazuch, Martin
    Vodrážka, Radek
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Acta Geologica Polonica
Svazek/č.
    Roč. 60, č. 3
Strany
    15
Rok
    2010
Výraz tezauru
    Cephalopoda
    Conchorhynchus
    Czech Republic.
    Nautilid jaws
    Nautilorhynchus
    Rhyncholites
    upper Cretaceous
Klíčové slovo
    Basin
    Beaks
    Bohemian
    Cretaceous
    Czech
    Deposits
    Late
    Nautilid
    Near-shore/shallow
    Republic
    Water
Abstrakt (anglicky)
   More than 30 isolated nautilid jaws have been discovered in washed samples of late Cretaceous (turonian) near shore/shallow water deposits located in the southern part of the Bohemian Cretaceous Basin (BCB). Upper and lower jaws discovered in genetically-similar early turonian deposits are described in detail herein. The nautilid jaw apparatuses comprise rhyncholites (upper jaws) assigned to Nautilorhynchus simplex (Fritsch), and conchorhynchs (lower jaws) assigned to Conchorhynchus cretaceus Fritsch. Some rhyncholites show signs of abrasion and corrosion, and may also form a substrate for sessile organisms. In one specimen, signs of acid digestion in the stomach of a predator were recognized. N. simplex is synonymized with "Rhyncholithus" bohemicus (till), "R." curvatus" (till), "R". rectus (till) and "R". curtus (till). The significant morphological variability observed in N. simplex is supported by biometric data.
Přispěvatel
    UK Praha, Přírodovědecká fakulta
Kód přispěvatele
    UK, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012