Silicoflagellates from Ocean Drilling Program Leg 113; new fossil evidence of their variability

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Author(s): McCartney, Kevin; Wise, Sherwood W., Jr.
Author Affiliation(s): Primary:
Univ. Maine, Presque Isle, ME, United States
Other:
Fla. State Univ., United States
Volume Title: 1988 review
Volume Author(s): Reuning, Winifred M., editor
Source: 1988 review, edited by Winifred M. Reuning. Antarctic Journal of the United States, 23(5), p.85-87. Publisher: National Science Foundation, Office of Polar Programs, Washington, DC, United States. ISSN: 0003-5335 CODEN: AJUSAF
Note: In English. 6 refs.; illus.
Summary: Recent deep-sea drilling in the Weddell Sea by the Ocean Drilling Program has provided two unusual fossil examples of silicoflagellate variability. The first of these is a lower Pliocene assemblage of highly variable skeletons conspecific with Distephanus speculum speculum (Ehrenberg). These skeletons, however, possess a variety of bridged apical structures instead of the usual apical ring. The second assemblage, consisting of three species, is even more unusual and may represent the oldest silicoflagellates ever found; it might include the progenitors of all other silicoflagellates. One of these taxa is characterized by exceptional variability and is described in McCartney and others (in press) as a new genus, Variramus. The two examples are discussed in detail.
Year of Publication: 1988
Research Program: ODP Ocean Drilling Program
Key Words: 10 Paleontology, Invertebrate; Antarctic Ocean; Cenozoic; Holocene; Invertebrata; Leg 113; Ocean Drilling Program; Paleontology; Protista; Quaternary; Silicoflagellata; Southern Ocean; Weddell Sea
Coordinates: S704954 S614837 E0030559 W0432706
Record ID: 1990000578
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Reference includes data from the Antarctic Bibliography, United States