Matches in SemOpenAlex for { <https://semopenalex.org/work/W2893695643> ?p ?o ?g. }
Showing items 1 to 69 of
69
with 100 items per page.
- W2893695643 abstract "Planktonic foraminifera have one of the most complete fossil records of any group, and have proved invaluable in the fields of biostratigraphy, palaeoceanography and evolutionary studies. Gradual morphological change characterises their evolution, meaning that species delimitation for biostratigraphic purposes is typically artificial and arbitrary. Delimited taxa in the fossil record are ‘morphospecies’ rather than biological species. The late Neogene morphospecies Globigerinoidesella fistulosa is of considerable biostratigraphic utility because of its short stratigraphic range (mid-Pliocene to early Pleistocene) and unique morphology. It evolved distinctive protuberances on the final chamber(s), but morphospecies delimitation is problematic because of intergradation with its ancestor Trilobatus sacculifer. The fossil record of Globigerinoidesella fistulosa was investigated from multiple ocean basins, with research focused on four main areas: (1) Systematic taxonomy of G. fistulosa and the Trilobatus sacculifer plexus; (2) Biostratigraphy and biochronology of the extinction of G. fistulosa; (3) The role of heterochrony (i.e. changes in the timing and/or rate of development) in the morphological evolution of G. fistulosa; (4) Determination of the palaeoecology of G. fistulosa in relation to its ancestor T. sacculifer, to understand the mode of speciation and the potential palaeoceanographic applications of G. fistulosa. The taxonomic concepts of Globigerinoidesella fistulosa and the Trilobatus sacculifer plexus were revised, resolving numerous taxonomic issues in the group. Protuberance development was found to not only occur in Pliocene-Pleistocene T. sacculifer, but was also observed in Trilobatus immaturus, Trilobatus quadrilobatus and modern T. sacculifer specimens. New ages for the extinction of G. fistulosa and comparison with updated literature ages revealed that the currently used age of 1.88 Ma is only suitable locally and not applicable at other sites worldwide, where the extinction occurred between 1.716 and 1.74 Ma (~150,000 years later). The morphological evolution of G. fistulosa is demonstrated to be an example of the heterochronic process hypermorphosis. Stable isotope analyses (δ13C and δ18O) and palaeobiogeographic data reveal that G. fistulosa was a photosymbiotic, shallow-dwelling morphospecies with a distribution that tracked warm water oceanographic features. Geochemical depth profiles through test walls of G. fistulosa and T. sacculifer generated through laser ablation inductively coupled plasma mass spectrometry show heterogeneous Mg/Ca distribution, including cyclic high and low Mg/Ca banding and low Mg/Ca outer crusts" @default.
- W2893695643 created "2018-10-05" @default.
- W2893695643 creator A5069117961 @default.
- W2893695643 date "2017-05-28" @default.
- W2893695643 modified "2023-09-24" @default.
- W2893695643 title "The late Neogene planktonic foraminifera genus Globigerinoidesella : taxonomy, biostratigraphy, evolution and palaeoecology" @default.
- W2893695643 hasPublicationYear "2017" @default.
- W2893695643 type Work @default.
- W2893695643 sameAs 2893695643 @default.
- W2893695643 citedByCount "0" @default.
- W2893695643 crossrefType "dissertation" @default.
- W2893695643 hasAuthorship W2893695643A5069117961 @default.
- W2893695643 hasConcept C109007969 @default.
- W2893695643 hasConcept C127313418 @default.
- W2893695643 hasConcept C151730666 @default.
- W2893695643 hasConcept C177882397 @default.
- W2893695643 hasConcept C18903297 @default.
- W2893695643 hasConcept C27492601 @default.
- W2893695643 hasConcept C2776867882 @default.
- W2893695643 hasConcept C2779421809 @default.
- W2893695643 hasConcept C2780368712 @default.
- W2893695643 hasConcept C53570757 @default.
- W2893695643 hasConcept C58642233 @default.
- W2893695643 hasConcept C61721801 @default.
- W2893695643 hasConcept C71640776 @default.
- W2893695643 hasConcept C83042747 @default.
- W2893695643 hasConcept C86803240 @default.
- W2893695643 hasConceptScore W2893695643C109007969 @default.
- W2893695643 hasConceptScore W2893695643C127313418 @default.
- W2893695643 hasConceptScore W2893695643C151730666 @default.
- W2893695643 hasConceptScore W2893695643C177882397 @default.
- W2893695643 hasConceptScore W2893695643C18903297 @default.
- W2893695643 hasConceptScore W2893695643C27492601 @default.
- W2893695643 hasConceptScore W2893695643C2776867882 @default.
- W2893695643 hasConceptScore W2893695643C2779421809 @default.
- W2893695643 hasConceptScore W2893695643C2780368712 @default.
- W2893695643 hasConceptScore W2893695643C53570757 @default.
- W2893695643 hasConceptScore W2893695643C58642233 @default.
- W2893695643 hasConceptScore W2893695643C61721801 @default.
- W2893695643 hasConceptScore W2893695643C71640776 @default.
- W2893695643 hasConceptScore W2893695643C83042747 @default.
- W2893695643 hasConceptScore W2893695643C86803240 @default.
- W2893695643 hasLocation W28936956431 @default.
- W2893695643 hasOpenAccess W2893695643 @default.
- W2893695643 hasPrimaryLocation W28936956431 @default.
- W2893695643 hasRelatedWork W1528856208 @default.
- W2893695643 hasRelatedWork W1563507004 @default.
- W2893695643 hasRelatedWork W1951540306 @default.
- W2893695643 hasRelatedWork W1975133910 @default.
- W2893695643 hasRelatedWork W1979448151 @default.
- W2893695643 hasRelatedWork W2000829995 @default.
- W2893695643 hasRelatedWork W2024386875 @default.
- W2893695643 hasRelatedWork W2037323708 @default.
- W2893695643 hasRelatedWork W2037694960 @default.
- W2893695643 hasRelatedWork W2065766939 @default.
- W2893695643 hasRelatedWork W2121317826 @default.
- W2893695643 hasRelatedWork W2172451179 @default.
- W2893695643 hasRelatedWork W2220040823 @default.
- W2893695643 hasRelatedWork W2259473779 @default.
- W2893695643 hasRelatedWork W2312802655 @default.
- W2893695643 hasRelatedWork W2328255030 @default.
- W2893695643 hasRelatedWork W2584743903 @default.
- W2893695643 hasRelatedWork W2796672794 @default.
- W2893695643 hasRelatedWork W3010442060 @default.
- W2893695643 hasRelatedWork W3175058871 @default.
- W2893695643 isParatext "false" @default.
- W2893695643 isRetracted "false" @default.
- W2893695643 magId "2893695643" @default.
- W2893695643 workType "dissertation" @default.