Acritarchs and Chitinozoa
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Description: Information on these organisms which have not yet been able to be classified, including their fossil record, biology and life cycle with a number of images of individual species.
Acritarchs, the name coined by Evitt in 1963 which means "of uncertain origin", are an artificial group. The group includes any small (most are between 20-150 microns across), organic-walled microfossil which cannot be assigned to a natural group. They are characterised by varied sculpture, some being spiny and others smooth. They are believed to have algal affinities, probably the cysts of planktonic eukaryotic algae. They are valuable Proterozoic and Palaeozoic biostratigraphic and palaeoenvironmental tools.
Size: 525 chars
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WEBSITE Info
| Page title: | Acritarchs and Chitinozoa |
| Keywords: | micropalaeontology, micropaleontology, micropal, microfossils, nannofossils, acritarchs, calcareous nannofossils, chitinozoa, conodonts, diatoms, dinoflagellates, dinocycsts, forams, foraminifera, ostracods, palynology, rads, radiolaria, spores, pollen |
| Description: | This teaching and learning web-site is intended as an introduction to micropalaeontology. Micropalaeontology is the study of microfossils (any fossil generally less than 1mm in size). This page covers acritarchs. |
| IP-address: | 144.82.111.20 |