British Geological Survey, Keyworth, Nottingham
Acritarchs and chitinozoa are wed to date Ordovicinn rocks in England and Wales, but the data-base for both groups is poor. Study of chitinozoa has been neglected in the UK, in contrast to North America and southwest Europe where biozonations have been established. F o d definition of acritarch bioz...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1031.774 http://jgs.geoscienceworld.org/content/jgs/147/4/615.full.pdf |
| Summary: | Acritarchs and chitinozoa are wed to date Ordovicinn rocks in England and Wales, but the data-base for both groups is poor. Study of chitinozoa has been neglected in the UK, in contrast to North America and southwest Europe where biozonations have been established. F o d definition of acritarch biozones may. soon be possible in the Tremadoc-Arenig, but acritarch biostratigraphy in the Lhvirn-Ashgill is insuKiciently documented. Besides other microfossils, Ordovician rocks yield acritarchs and chitinozoa. Although these are valuable in correlation, there have been relatively few systematic investigations of their biostratigraphy in the UK, so their potential is far from realized. Chitinozoa. Chitinozoa are flask-shaped bodies, present in rocks of Ordovician to Devonian age. Their biological affinities are unknown; some authors consider them to be metazoan eggs or egg-cases, while others take the view that they have protist or fungal affinities (Paris 1981, pp. |
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