Macro- and microfossils from the Upper Cretaceous sedimentary rocks of Hornby Island, British Columbia, Canada

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dc.contributor.authorMcLachlan, Sandy Melvin Stuart
dc.contributor.supervisorPospelova, Vera
dc.contributor.supervisorHebda, Richard Joseph
dc.date.accessioned2017-08-22T16:39:42Z
dc.date.copyright2017en_US
dc.date.issued2017-08-22
dc.degree.departmentSchool of Earth and Ocean Sciencesen_US
dc.degree.levelMaster of Science M.Sc.en_US
dc.description.abstractHeteromorph ammonites and dinoflagellate cysts from the Upper Cretaceous Northumberland Formation on Hornby Island, British Columbia, Canada are examined. The collection and preparation of new material has enabled the recognition of eleven species of which only three have been reported from the locality. Of these taxa represented from three heteromorph ammonite families in the study area, five are new occurrences and three are new to science. This expansion of the Hornby Island ammonite fauna is presented alongside a pioneering taxonomic survey of dinoflagellate cysts from the same rocks. Together, these macro- and microfossils reinforce a late Campanian age for the Northumberland Formation with the upper extent of the section approaching the Campanian-Maastrichtian boundary (CMB) interval. The palaeoecology and evolutionary relationships of these heteromorph ammonoids are considered with new insights into their ontogenetic development and neritic palaeoenvironmental circumstances. The dinoflagellate cysts and associated terrestrial palynomorphs have also allowed for enhanced palaeoenvironmental reconstruction and depositional setting inference. The scope of the studied material, and the presence of key index taxa, enables refined biostratigraphy and a stronger basis for correlation of the Hornby Island succession with neighboring coeval biotic provinces.en_US
dc.description.embargo2018-08-10
dc.description.scholarlevelGraduateen_US
dc.identifier.urihttp://hdl.handle.net/1828/8447
dc.languageEnglisheng
dc.language.isoenen_US
dc.rightsAvailable to the World Wide Weben_US
dc.subjectPaleontologyen_US
dc.subjectInvertebrate Paleontologyen_US
dc.subjectMicropaleontologyen_US
dc.subjectPaleoecologyen_US
dc.subjectPaleobiologyen_US
dc.subjectPalynologyen_US
dc.subjectGeologyen_US
dc.subjectMesozoicen_US
dc.subjectCretaceousen_US
dc.subjectCampanianen_US
dc.subjectNorth Pacificen_US
dc.subjectNanaimo Groupen_US
dc.subjectAmmonitesen_US
dc.subjectAmmonoidsen_US
dc.subjectDinoflagellatesen_US
dc.subjectDinoflagellate Cystsen_US
dc.subjectDinocystsen_US
dc.subjectPollenen_US
dc.subjectBiostratigraphyen_US
dc.subjectMarineen_US
dc.subjectInvertebrateen_US
dc.subjectFossilsen_US
dc.subjectMicrofossilsen_US
dc.subjectMacrofossilsen_US
dc.titleMacro- and microfossils from the Upper Cretaceous sedimentary rocks of Hornby Island, British Columbia, Canadaen_US
dc.typeThesisen_US

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