Untitled

2010010145
西 西 伯 利 亚 侏 罗 纪 和 石 炭 纪 有 孔 虫
Ammosiphonia He, 1977 属 的 代 表 分
子 = Representatives of the genus
Ammosiphonia He, 1977 (Foraminifera)
from the Jurassic and Carboniferous of
Western Siberia. ( 英 文 ). Marinov V A.
Paleontological Journal, 2006, 40(5):
490-499 2 图 版 .
The wide distribution of the genus
Ammosiphonia in the Upper Jurassic and
Carboniferous of Western Siberia is established
for the first time. Six haplophragmoidid
species of Western Siberia
are assigned to this genus. The diagnosis
of the genus is emended; the taxonomic
positions and scopes of the species
Ammosiphonia nonioninoides (Reuss), A.
beresoviensis (Bulatova), and A. sibirica
(Zaspelova) are revised; two new species,
A. suprajurassica sp. nov. and A.
valanginica sp. nov., are described.
2010010146
显 生 宙 放 射 虫 演 化 中 的 生 物 危 机 和 阶
段 = Biotic crises and stages of radiolarian
evolution in the Phanerozoic. ( 英 文 ).
Afanasieva M S; Amon E O. Paleontological
Journal, 2006, 40(4): S453-
S467 3 图 版 .
The questions of ecology and taphonomy
of radiolarians are reviewed and
reexamined. In Recent oceans and seas,
the major part of the “radiolarian rain”
(dead individuals) comes from the layer
of the water column which is not deeper
than 500 m; therefore, the bottom radiolarian
thanatocenoses and taphocenoses
are formed in all oceanic zones, including
the coastal and central oligotrophic
regions of oceans. However, radiolarians
should not be regarded as indicators of
exclusively deepwater oceanic conditions.
The crucial moments in the evolution
of radiolarians at the major Phanerozoic
boundaries are recognized. A
dynamic model of cyclic development of
radiolarians in the Phanerozoic is proposed
and four phases and nine stages in
their evolution are recognized. The absence
of an outburst of radiolarian biodiversity
in the Holocene is shown.
Many great extinctions of radiolarians
occurred at the boundaries between seasons
of galactic years.
2010010147
西 特 提 斯 晚 白 垩 世 rotaliid 类 有 孔 虫
= Late Cretaceous rotaliids (Foraminiferida)
from the Western Tethys.
( 英 文 ). Boix C; Villalonga R; Caus E;
Hottiger L. Neues Jahrbuch fur Geologie
u. Palaontologie / Abhandlungen,
2009, 253(2-3): 197-227
During the global community maturation
cycle starting at the Cenomanian-
Turonian boundary and ending with the
events at the K-T boundary, the rotallid
foraminifera produce for the first time in
Earth History a considerable diversity of
K-strategists that exhibit large shell sizes,
complex umbilical structures and an
imprtant dimorphism of generations. In
the Late Cretaceous Pyrenean Gulf four
groups are distinguished.
2010010148
放 射 虫 Heliodiscidae Haeckel 科 新 种
= New species of the family Heliodiscidae
Haeckel (radiolaria). ( 英 文 ). Vishnevskaya
V S. Paleontological Journal,
2006, 40(2): 134-142 4 图 版 .
The family Heliodiscidae Haeckel,
1881, which includes five genera, is reviewed.
New methods of investigation
are applied to the inner structure of Cretaceous
spherical radiolarian skeletons,
which reveal numerous taxa with an eccentric
microsphere. Three new species,
Astrophacus marinae sp. nov., Excentrosphaerella
kovalenkovi sp. nov., and
Excentrosphaerella kurilovi sp. nov., are
described. The eccentric position of the
microsphere suggests that these forms
are nontypical Mesozoic radiolarians or
new representatives of the family Heliodiscidae
Haeckel, 1881, which was previously
recorded in the Cenozoic.
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