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Changes in the taxonomic diversity of
Mongolian Ordovician-Silurian corals
(Tabulatoidea, Heliolitoidea, Cyrtophyllida,
Rugosa) are analyzed. Evolution of
the taxonomic diversity is analyzed in
two aspects: quantitative and qualitative
changes. Changes in the diversity of
Mongolian corals are caused by (1) evolutional
developmental stage of the
group and its adaptational possibilities
(internal reason) and (2) changes in the
environmental parameters, which reproduce
regional and general global events
(external reason).
2010010152
西 伯 利 亚 和 蒙 古 盆 地 的 奥 陶 纪 珊 瑚 :
分 类 学 多 样 性 , 形 态 发 生 和 出 现 =
Ordovician corals of the Siberian and
Mongolian basins: Taxonomic diversity,
morphogenesis, and occurrence. ( 英 文 ).
Bondarenko O B; Ulitina L M. Paleontological
Journal, 2009, 43(11): 1439-
1457 4 图 版 .
Taxonomic diversity, structural peculiarities,
and occurrence of the Ordovician
corals Tabulatoidea, Heliolitoidea,
Rugosa, and Cyrtophyllida from the Siberian
and Mongolian basins are analyzed.
The corals settled in the Siberian
basin almost for 1.5 million of years earlier
than in the Mongolian basin. First
corals in the Siberian basin were found
in the lowermost Muktei Horizon (Llanvirn,
i.e. Darriwilian Stage) while first
corals in the Mongolian basin are known
from the lower part of the Bairim Horizon
(Late Caradoc, i.e. lower part of the
Katian Stage). First corals in both basins
belonged to the subclass Tabulatoidea.
2010010153
海 绵 (Cliona orientalis Thiele ,
1900) 的 生 物 侵 蚀 率 : 超 短 距 离 的 空
间 变 化 = Bioerosion rates of the sponge
Cliona orientalis Thiele, 1900: spatial
variation over short distances. ( 英 文 ).
Holmes G; Ortiz J; Schönberg C H L.
Facies, 2009, 55(2): 203-211
We studied bioerosion rates and tissue
growth of the sponge Cliona orientalis
Thiele, 1900. Experimental blocks
grafted with sponge tissue were deployed
at three sites in Moreton Bay,
QLD, Australia, which have different
environmental conditions. Bioerosion
rates varied between 4, 5, and 10 kg m −2
year −1 when related to final tissue area
and between 4, 7, and 16 kg m −2 year −1
when related to initial tissue area of the
graft, which supports findings of earlier
studies. Comparing results between the
sites, eutrophication appeared to have
the most stimulating effect and is most
likely to have caused the measured differences.
However, slight differences
between shading and current speeds may
also have played a role. Variation may
have masked spatial differences of
sponge growth, which were insignificant
between study sites. Growth and bioerosion
nevertheless followed the same
trend and were weakly correlated. Habitat
quality itself had no influence. Overall,
the twofold difference in sponge
bioerosion over a distance as short as 10
km suggests that when estimating bioerosion
rates, subsamples should be
tested at different locations.
2010010154
从 底 栖 生 物 化 石 再 释 贵 州 独 山 泥 盆 系
龙 洞 水 段 的 时 代 = Age Re-assessment
Of The Longdongshui Member (Middle
Devonian) In Southern Guizhou On The
Basis Benthic Fossils. ( 中 文 ). 廖 卫 华 ;
邓 占 球 . 古 生 物 学 报 , 2009, 48(4): 637-
645
贵 州 独 山 的 猴 儿 山 组 龙 洞 水 段 是 一
套 浅 海 相 碳 酸 盐 沉 积 , 盛 产 底 栖 生 物 化
石 。 通 过 对 该 段 地 层 中 所 含 四 射 珊
瑚 、 床 板 珊 瑚 和 腕 足 类 等 化 石 属 种 的
详 尽 分 析 , 再 次 证 实 龙 洞 水 段 的 地 质 时
代 仍 应 属 中 泥 盆 世 早 期 (Eife-lian)。 而
不 是 像 某 些 根 据 痕 迹 化 石 或 层 序 地 层
学 的 研 究 那 样 将 它 置 于 下 泥 盆 统 。
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