Marine palynomorph abundance estimates of sediment core CRP-2A (Fig. 2)
Citation
Hannah M J, Wilson G, Wrenn J (2000). Marine palynomorph abundance estimates of sediment core CRP-2A (Fig. 2). PANGAEA - Data Publisher for Earth & Environmental Science. Occurrence dataset https://doi.org/10.1594/pangaea.545144 accessed via GBIF.org on 2024-09-01.Description
A diverse assemblage of marine palynomorphs was recovered from the Oligocene - Miocene section of CRP-2/2A. Most of the assemblage is composed of previously unrecognised species. Three distinct groups of marine palynomorph were recognised: (1) prasinophytes, mainly Cymatiosphaera, (2) acritarchs, mainly Leiosphaeridia and Sigmopollis although Leiofusa is an important component of the bottom half of the hole, and (3) dinoflagellate cysts. About 27 species of in situ dinoflagellate cysts were recorded, of which seven apparently undescribed species of Lejeunecysta form a prominent component. Reworked specimens of several species of the Paleogene Transantarctic Flora occur in CRP-2/2A sediments. Several abundance peaks of reworked taxa from the Transantarctic Flora are recorded. Three marine palynomorph zones were recognised (MP3, MP2, MP1), considered to be early Oligocene, late Oligocene, and late Oligocene/early Miocene in age respectively. Samples from the Quaternary and Pliocene part of CRP-2/2A were also examined. These proved either barren or yielded very sparse low diversity floras.Taxonomic Coverages
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Plantaerank: kingdom
- rank: kingdom
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Protozoarank: kingdom
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Myzozoarank: kingdom
Geographic Coverages
Event: CRP-2A,
off Cape Roberts, Ross Sea, Antarctica
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Bibliographic Citations
Contacts
Mike J Hannahoriginator
Graeme Wilson
originator
John Wrenn
originator
metadata author
PANGAEA - Data Publisher for Earth & Environmental Science
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