Sökning: "Asterozoa"

Hittade 1 uppsats innehållade ordet Asterozoa.

  1. 1. Phosphatized echinoderm remains from upper Lower Ordovician strata of northern Öland, Sweden : preservation, taxonomy and evolution

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Magnus Svensson; [1999]
    Nyckelord :Echinodermata; Lower Ordovician; phosphatization; Gillberga; Öland; Sweden; stereom; Stylophora; Asterozoa; Crinozoa; Echinozoa; Cyclocystoidiea; Palaeozoic fauna; Earth and Environmental Sciences;

    Sammanfattning : Phosphatization of late Early Ordovician echinoderm fragments from N Öland has resulted in excellent preservation of the echinoderm stereom ultra structure. The stereom investigated shows a close relationship to different types found in recent echinoderms. LÄS MER