Show simple item record

dc.contributor.authorPaez-Reyes, Manuel
dc.date.accessioned2014-05-13T19:25:27Z
dc.date.available2014-05-13T19:25:27Z
dc.date.issued2014-05-13
dc.identifier.urihttp://hdl.handle.net/10464/5437
dc.description.abstractThe palynology of Ocean Drilling Program Site 1007, leeward of the present Bahamas Bank, provides insights into upper Oligocene–lower Pleistocene dinoflagellate cyst associations in the tropical Americas. These associations are reviewed along with the sedimentary paleoenvironment to provide context for a morphological study of the cystdefined dinoflagellate Operculodinium bahamense and its comparison with the thecadefined dinoflagellate Protoceratium reticulatum which produces a cyst assignable to the cyst-defined genus Operculodinium. Detailed reconstructions of the tabulation in both species reveal strong similarities, having a sexiform hyposomal tabulation and L-type or modified L-type ventral organization. Protoceratium reticulatum has dextral torsion of the hypotheca, requiring assignation of the genus to the subfamily Cribroperidinioideae, whereas Operculodinium bahamense has neutral torsion requiring assignation to the subfamily Leptodinioideae. Results either imply polyphyletic origins for the genus Operculodinium or that combinations of ventral organization and torsion cannot always be applied rigidly to subdivide the family Gonyaulacaceae.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectDinoflagellateen_US
dc.subjectOperculodinium bahamenseen_US
dc.subjectProtoceratium reticulatumen_US
dc.subjecttabulationen_US
dc.subjectphylogenyen_US
dc.titleThe Cenozoic Gonyaulacacean Dinoflagellate Genera Operculodinium Wall, 1967 and Protoceratium Bergh, 1881 and Their Phylogenetic Relationshipsen_US
dc.typeElectronic Thesis or Dissertationen_US
dc.degree.nameM.Sc. Earth Sciencesen_US
dc.degree.levelMastersen_US
dc.contributor.departmentDepartment of Earth Sciencesen_US
dc.degree.disciplineFaculty of Mathematics and Scienceen_US
dc.embargo.termsNoneen_US
refterms.dateFOA2021-08-04T02:54:38Z


Files in this item

Thumbnail
Name:
Brock_Paez-Reyes_Manuel_2014.pdf
Size:
21.37Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record