Caulet, Jean-Pierre (1986): Radiolarians from the Southwest Pacific [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.803371, Supplement to: Caulet, J-P (1986): Radiolarians from the Southwest Pacific. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 835-861, https://doi.org/10.2973/dsdp.proc.90.114.1986
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Abstract:
Radiolarians are very rare in all Leg 90 sites. They are relatively more frequent only in Neogene sediments from Sites 586 and 594, and in Eocene sediments at Site 592. In this chapter radiolarian abundances are recorded as comparative percentages for 92 Neogene morphotypes at Site 586B. Relative abundances only are estimated at Sites 592 and 594, where preservation is poor to moderate. A tentative correlation of radiolarian events at Hole 586B and Site 594 shows that only a few species can be found in both tropical and subantarctic areas.
New evolutionary lineages are proposed. 1. Middle Miocene eucyrtids like Eucyrtidium teuscheri group evolved into a widespread species (E. teuscheri teuscheri) ranging from middle Miocene to Holocene and a temperate species (E. teuscheri orthoporus) ranging from middle Miocene to early Pleistocene. 2. Phormostichoartus pitomorphus appears to be a temperate descendant of the cosmopolitan P. fistula and disappears in early Pleistocene time. 3. The discovery of Lamprocyrtis daniellae n.sp. calls into question the lineage L. heteroporos -> L. nigriniae. 4. The evolution of Lamprocyclas maritalis from an ancestor group (L. aff. maritalis) is located in the early part of the Pterocanium prismatium Zone.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: -27.498033 * Median Longitude: 166.296133 * South-bound Latitude: -45.523500 * West-bound Longitude: 158.498200 * North-bound Latitude: -0.497300 * East-bound Longitude: 174.948000
Date/Time Start: 1982-11-19T00:00:00 * Date/Time End: 1983-01-03T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Caulet, J-P (1986): (Table 1) Relative abundance of radiolarians from DSDP Hole 89-586B. https://doi.org/10.1594/PANGAEA.249546
- Caulet, J-P (1986): (Table 2) Abundance of some radiolarians from DSDP Hole 90-592. https://doi.org/10.1594/PANGAEA.249547
- Caulet, J-P (1986): (Table 3) Abundance of som eradiolarians from DSDP Hole 90-594. https://doi.org/10.1594/PANGAEA.249548