Complex calcitic crystallizations innostoc parmelioideskütz (Freshwater cyanobacterium): Rhombs around trichomes insidenostoccolonies and epiphytic bacterial microstromatolites
作者:
Pierre Freytet,
Eric Verrecchia,
期刊:
Geomicrobiology Journal
(Taylor Available online 1993)
卷期:
Volume 11,
issue 2
页码: 77-84
ISSN:0149-0451
年代: 1993
DOI:10.1080/01490459309377936
出版商: Taylor & Francis Group
关键词: Nostoc;cyanobacteria;calcite;stromatolites;bacteria;freshwater environment
数据来源: Taylor
摘要:
Pluricentimetric colonies ofNostoc parmelioidesexhibit two types of calcifications: (1) rhombs, either isolated, chains, or grouped in elongate masses around sheathless trichomes in the interior of the colony; or (2) discs with fibroradiating and concentric fabric, in which radial elements are elongate, stacked, upside‐down, bell‐shaped monocrystals, with concentric laminations in cross section. The discs could be the result of a very peculiar calcification of an epiphytic organism, probably a bacterium. These structures can be referred to as bacterial microstromatolites.
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