Journal
LETHAIA
Volume 45, Issue 1, Pages 34-45Publisher
WILEY
DOI: 10.1111/j.1502-3931.2011.00291.x
Keywords
Chlorophytes; Early Cretaceous; fungi; microbial euendoliths; Romania; scleractinian corals
Categories
Funding
- Romanian research grant [CNCSIS 3/1330]
- Polish Ministry of Science and Higher Education [2P04D 028 29]
Ask authors/readers for more resources
A spectacularly preserved assemblage of microbial euendoliths, penetrating into skeletons of growing scleractinian corals, has been recognized in Early Aptian (Early Cretaceous) reef limestone of the Rara. u Mountains (East Carpathians, NE Romania). Microboring euendolithic filaments were found in five coral colonies of the suborder Microsolenina. They remained in part well-preserved, often impregnated with iron oxides, which made them visible even in strongly recrystallized parts of coral skeletons. Filaments of a wide range of sizes (2-40 lm in diameter) were concentrated within medium parts of coral septa, oriented along the septa in the direction of the coral growth. The larger filaments were tubular, occurring in bundles and branched into finer, often tapering branches. Their behaviour and organization were quite similar to the modern euendolithic siphonalean chlorophyte Ostreobium. Filament diameters exceeded those reported for the modern species, but covered a similarly wide size range. Narrower frequently branching filaments, 4-8 lm in diameter, resemble distal branching patterns of modern Ostreobium quekettii. Some very thin filaments (ca. 1-2 lm) observed within skeleton or inside the large tubular filaments, sometimes associated with globular swellings, may represent euendolithic fungi. The recrystallization of coral skeleton had limited effect on preservation of euendoliths due to their impregnation with iron oxides; microbial euendoliths were subjected to different taphonomic changes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available