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  1. 1. The life cycle and developmental phases of Cambrian-Ordovician organic-walled microfossils from Kolguev Island, Arctic Russia.

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Magdalena Pazio; [2016]
    Keywords : Saharidia fragilis; Prasinophyceae algae; life cycle; acritarchs; Saharidia fragilis; Prasinophyceae; livscykel; acritarch;

    Abstract : Light microscopy studies of collections of late Cambrian/Early Ordovician organic-walled microfossils, informally called acritarchs, provide the observations on phenotypic traits that are comparable to Modern microalgae and make possible recognition of various developmental stages in their complex life cycle. The exceptionally preserved Saharidia fragilis microfossils show the internal body within the vesicle and the formation of the fringe and pylome, the opening for releasing of the daughter cells from the phycoma-like cyst. READ MORE