radiolaria - Marum

Radiolaria 14 Bibliography - 1989
paleolatitude aspects of some faunas is suggested. New conodont
zonation for the Upper Carnian, and new radiolarian zonation for
much of the studied interval is expected. New and existing fossil
zonation will provide a fundamental key in sedimentological,
stratigraphic and structural studies of the Upper Triassic both on
the Queen Charlotte Islands and elsewhere.
Casey, R.E. 1989. Model of modern polycystine
radiolarian shallow-water zoogeography. In: Biological
paleoceanography; plankton, productivity and carbon in
ancient marine systems. A selection of papers presented at
the fourth North American paleontological convention.
(Eicher, D.L. et al., Eds.), vol. 74/1-2. Palaeogeography,
Palaeoclimatology, Palaeoecology, pp. 15-22.
There appear to be about six shallow-water polycystine
radiolarian provinces in the modern ocean. These provinces owe their
integrity to the major circulation systems that create packages of
water and environments which vary in degrees of oceanographic and
temporal stability. The subpolar cyclonic gyres are low-diversity
provinces dominated by the radiolarian groups, cenodiscids,
spongodiscids, spongotrochins, lithelids, and lophophaenins (some of
these members exhibit the phenomenon of tropical submergence).
Endemism is moderate in the southern subpolar cyclonic gyre. This
gyre contains such endemic forms as antarctisins. The transition
province contains a moderate-diversity fauna dominated by coldwater
morphotypes of warm-water sphere taxa and a few endemics;
however, this transition province appears to be a region of
radiolarian isolation and evolution. The subtropical anticyclonic gyre
province exhibits the highest radiolarian diversities, densities, and
endemism of any of the provinces. This province is dominated by
radiolarians that host symbiotic algae, and this association might
possibly explain why they dominate these oiigotrophic regions. The
equatorial province is very similar to the subtropical anticylonic gyre
province; however, it does not exhibit as high a diversity, density, or
degree of endemism as does the gyre. The eastern tropical province
is dominated by symbiont-bearing radiolarians as is the subtropical
anticyclonic gyre; however, unlike the gyre, there are few endemics
and only low to moderate diversities and densities. The main reason
for few endemics in the eastern tropical province is probably due to
the youth of this province (it has only existed since the mid-
Pliocene, whereas the subtropical anticyclonic gyre province has a
history extending into the mid-Miocene). The boundary current
"provinces" are really just tappings of the equatorial, subpolar, or
transition provinces and reflect these parental provinces in their
radiolarian characteristics.
Casey, R.E., Weinheimer, A.L. & Nelson, C.O.
1989. California El Niños and related changes of the
California current system from Recent and fossil radiolarian
records. In: Aspects of climate variability in the Pacific and
the western Americas. (Peterson, D.H., Eds.), vol. 55.
Geophysical Monograph, pp. 85-92.
For the first time Lower Permian Radiolaria are described from
Western Sicily, so far unknown from the whole Tethyan Eurasia. The
fauna derives from olistoliths of dark gray, partly silty, hard
marlstones and marly limestones without any macrofauna and from
radiolarian micrites. Radiolarians, clearly dominated by Albaillellacea
DEFLANDRE, 1952 (Spinodefrandrella ? siciliensis n. sp.,
Pseudoalbaillella scalprata scalprata HOLDSWORTH & JONES, 1980,
P. scalprata postscalprata ISHIGA, 1983, P. scalprata
praescalprata n. subsp., P. (Kitoconus) elongata ISHIGA & IMOTO,
1980), are mostly the only fossils in these olistoliths. These
radiolarian faunas were until now known only from the Circumpacific
area (P. scalprata scalprata also known from West Texas). They
give the first evidence for the presence of pelagic Lower Permian in
Sicily (topmost part of the Parafollicucullus lomentarius
Assemblage-Zone of highest Artinskian or Lower Kungurian=Lower
Jachtashian, P. ornatus Zone of Kungurian age and perhaps
Pseudoalbaillella rhombothoracata A.-Z. of Late Kungurian to Early
Chihsian age).
Catalano, R., Di Stefano, P. & Kozur, H. 1989.
Lower permian Albaillellacea (Radiolaria) from Sicily and
their stratigraphic and paleogeographic significance. Rend.
Accad. Sci. fis. mat., Ser. IV, 56, 1-24.
For the first time Lower Permian Radiolaria are described from
Western Sicily, so far unknown from the whole Tethyan Eurasia. The
fauna derives from olistoliths of dark gray, partly silty, hard
marlstones and marly limestones without any macrofauna and from
radiolarian micrites. Radiolarians, clearly dominated by Albaillellacea
DEFLANDRE, 1952 (Spinodefrandrella ? siciliensis n. sp.,
Pseudoalbaillella scalprata scalprata HOLDSWORTH & JONES, 1980,
P. scalprata postscalprata ISHIGA, 1983, P. scalprata
praescalprata n. subsp., P. (Kitoconus) elongata ISHIGA & IMOTO,
1980), are mostly the only fossils in these olistoliths. These
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radiolarian faunas were until now known only from the Circumpacific
area (P. scalprata scalprata also known from West Texas). They
give the first evidence for the presence of pelagic Lower Permian in
Sicily (topmost part of the Parafollicucullus lomentarius
Assemblage-Zone of highest Artinskian or Lower Kungurian=Lower
Jachtashian, P. ornatus Zone of Kungurian age and perhaps
Pseudoalbaillella rhombothoracata A.-Z. of Late Kungurian to Early
Chihsian age).
From a paleogeographic point of view the findings of these
faunas suggest that a broad pelagic belt connected the
Circumpacific area and Sicily during the Lower Permian. This belt, as
long as the Alpidic Orogen, was situated north of Gondwana and
south of the later Tethyan median platforms.
After the discovery of Middle Permian and Upper Permian
(Abadehian, Dzhulfian) Albaillellaria, pelagic conodonts and
psychrospheric Ostracoda, described in separate papers, can be
assumed that the studied zone (Sicanian paleogeographic domain)
was during the whole Permian an epioceanic area. Pelagic conditions
lasted in this belt during the Mesozoic and Early Cenozoic. Apulia in
the Permian was separated from Gondwanaland, but during its
Mesozoic evolution was more near related to Africa.
Chen, M.H. & Tan, Z.Y. 1989. Description of a new
genus and 12 new species of Radiolaria in sediments from the
South China Sea. Tropic Oceanol., 8/1, 1-9. (in Chinese)
Cheng, Y.N. 1989. Upper Paleozoic and Lower Mesozoic
radiolarian assemblages from the Busuanga Islands, North
Palawan Block, Philippines. Bull. natl. Mus. nat. Sci.,
Taiwan, 1, 129-176.
A preliminary field sampling from ribbon chert successions on
Busuanga and Uson Islands yield abundant and well-preserved
Radiolaria. Six radiolarian assemblages can be recognized of which
three assemblages are of Permian in age and three assemblages are
of Triassic in age. They are tentatively named as: Albaillella cf.
Ievis—Latentifustula cf. similicutis Assemblage, Follicucullus cf.
scholasticus—Triplanospongos cf. musashiensis Assemblage,
Neoalbaillella cf. optima Assemblage, Pesudoheliodiscus sp. F
Assemblage, and Betraccium deweveri Assemblage. Twenty-nine
species belonging to thirteen genera of the Upper Paleozoic
albaillellids and stauraxon polycystins are illustrated. For Triassic
(Ladinian to upper Norian) section, Radiolaria are much more
diversified and totally sixty-four species belonging to twenty-three
genera are illustrated.
Cheng, Y.N. & Yeh, K.Y. 1989. Radiolaria in surface
sediments from west central Pacific near Taiwan (I). Bull.
natl. Mus. nat. Sci., Taiwan, 1, 177-212.
This is the first in a series of reports dealing with recent
radiolarian studies for the west central Pacific near Taiwan. Based on
the analyses of twenty six core tops, the results can be summerized
as followings. (1) Radiolaria are rich in the fine-grain sediments from
the basin to the southwest of Taiwan. (2) The major radiolarian
components of each sample are similar to one another at generic
level. (3) All the radiolarian assemblages are characterized by
having distinct tropical forms and some subtropical taxa. (4) In the
basin along the eastern coast of Taiwan, sediments containing
Radiolaria were mostly collected from the southern part. According
to the previous workers, this area could be an upwelling zone
Coccioni, R., Franchi, R., Nesci, O., Wezel,
F.C., Battistini, F. & Pallecchi, P. 1989.
Stratigraphy and Mineralogy of the Selli Level (Early Aptian)
at the Base of the Marne a Fucoidi in the Umbro-Marchean
Apennines (Italy). In: Cretaceous of the Western Tethys.
Proceedings 3rd International Cretaceous symposium,
Tübingen 1987. (Wiedman, J., Eds.). E. Schweizerbart'sche
Verlagsbuchhandlung, Stuttgart. pp. 563-584.
Detailed, lithostratigraphical, biostratigraphical and
mineralogical studies on the "ichthyolithic-bituminous-radiolaritic"
regional marker-bed (named Selli Level), located just above the lower
boundary of the Marne a Fucoidi Formation (early Aptian- late
Albian) in the Umbro-Marchean Apennines, were carried out. This
distinctive organic-rich level is 1- 3 m thick. It consists of
mudstones alternating with radiolarian silty and sandy layers.
Radiolaria are the exclusive components of the microfaunal
assemblage (belonging to the Stichocapsa euganea Zone) found in
the level. The age of the level is Lower Aptian (Bedoulian).
The main mineralogical composition of the Selli Level is
characterized by the absence of calcite together with a high quartz
content. Smectite, illite and illite-smectite mixed layers dominate
the clay mineral fraction with some chlorite, chlorite-vermiculite and
occasional kaolinite. Based on its mineralogical composition, the