Matches in SemOpenAlex for { <https://semopenalex.org/work/W2094646972> ?p ?o ?g. }
Showing items 1 to 65 of
65
with 100 items per page.
- W2094646972 abstract "Upper Ordovician-Lower Silurian marine mudstones in the Appalachian basin, which have not been subjected to extensive heating or oxidation, contain abundant organic-walled phytoplankton (prasinophycean algal phycomata and acritarchs). In most areas graptolites and conodonts have not been recovered from these rocks, making the phytoplankton particularly important for biostratigraphic correlation. Recent advances have improved the precision with which these microfossils can be used. By tabulating relative abundance data carefully, an abrupt change in the composition of phytoplankton associations can be recognized at the Ordovician-Silurian boundary can be located with greater precision and confidence than is possible using the stratigraphic ranges of individual species. Many supposedly long-ranging species have relatively short stratigraphic ranges, and thus greater utility, as a result of detailed taxonomic studies. Therefore, type and comparative material are important considerations. Also, vesicle wall architecture and dehiscent structures are valuable taxonomic characters. Scanning electron microscopy examination has improved our understanding of small forms (less than 20 ..mu..m in diameter), and has thus increased the number of taxa available for use in biostratigraphy. Further study of samples from vertically extensive stratigraphic sections of established age should help workers refine the biostratigraphy of these microfossils." @default.
- W2094646972 created "2016-06-24" @default.
- W2094646972 creator A5046713129 @default.
- W2094646972 date "1986-01-01" @default.
- W2094646972 modified "2023-09-27" @default.
- W2094646972 title "Biostratigraphic Utility of Organic-Walled Phytoplankton, Upper Ordovician-Lower Silurian of Appalachian Basin: ABSTRACT" @default.
- W2094646972 doi "https://doi.org/10.1306/94885aed-1704-11d7-8645000102c1865d" @default.
- W2094646972 hasPublicationYear "1986" @default.
- W2094646972 type Work @default.
- W2094646972 sameAs 2094646972 @default.
- W2094646972 citedByCount "0" @default.
- W2094646972 crossrefType "journal-article" @default.
- W2094646972 hasAuthorship W2094646972A5046713129 @default.
- W2094646972 hasConcept C109007969 @default.
- W2094646972 hasConcept C127313418 @default.
- W2094646972 hasConcept C142796444 @default.
- W2094646972 hasConcept C151730666 @default.
- W2094646972 hasConcept C18903297 @default.
- W2094646972 hasConcept C2779004622 @default.
- W2094646972 hasConcept C2780892065 @default.
- W2094646972 hasConcept C61721801 @default.
- W2094646972 hasConcept C71640776 @default.
- W2094646972 hasConcept C86803240 @default.
- W2094646972 hasConcept C91442348 @default.
- W2094646972 hasConcept C97316735 @default.
- W2094646972 hasConceptScore W2094646972C109007969 @default.
- W2094646972 hasConceptScore W2094646972C127313418 @default.
- W2094646972 hasConceptScore W2094646972C142796444 @default.
- W2094646972 hasConceptScore W2094646972C151730666 @default.
- W2094646972 hasConceptScore W2094646972C18903297 @default.
- W2094646972 hasConceptScore W2094646972C2779004622 @default.
- W2094646972 hasConceptScore W2094646972C2780892065 @default.
- W2094646972 hasConceptScore W2094646972C61721801 @default.
- W2094646972 hasConceptScore W2094646972C71640776 @default.
- W2094646972 hasConceptScore W2094646972C86803240 @default.
- W2094646972 hasConceptScore W2094646972C91442348 @default.
- W2094646972 hasConceptScore W2094646972C97316735 @default.
- W2094646972 hasLocation W20946469721 @default.
- W2094646972 hasOpenAccess W2094646972 @default.
- W2094646972 hasPrimaryLocation W20946469721 @default.
- W2094646972 hasRelatedWork W1524532859 @default.
- W2094646972 hasRelatedWork W1564639040 @default.
- W2094646972 hasRelatedWork W1894467343 @default.
- W2094646972 hasRelatedWork W1984573560 @default.
- W2094646972 hasRelatedWork W2007883658 @default.
- W2094646972 hasRelatedWork W2050250798 @default.
- W2094646972 hasRelatedWork W2116830603 @default.
- W2094646972 hasRelatedWork W2144524437 @default.
- W2094646972 hasRelatedWork W2181560488 @default.
- W2094646972 hasRelatedWork W2184933100 @default.
- W2094646972 hasRelatedWork W2227423914 @default.
- W2094646972 hasRelatedWork W2329137631 @default.
- W2094646972 hasRelatedWork W2344971217 @default.
- W2094646972 hasRelatedWork W2510564691 @default.
- W2094646972 hasRelatedWork W2605492843 @default.
- W2094646972 hasRelatedWork W2902921551 @default.
- W2094646972 hasRelatedWork W3010880121 @default.
- W2094646972 hasRelatedWork W3032199485 @default.
- W2094646972 hasRelatedWork W52065068 @default.
- W2094646972 hasRelatedWork W2149721081 @default.
- W2094646972 hasVolume "70" @default.
- W2094646972 isParatext "false" @default.
- W2094646972 isRetracted "false" @default.
- W2094646972 magId "2094646972" @default.
- W2094646972 workType "article" @default.