Untitled

2010010014
波 罗 的 古 陆 : 中 奥 陶 世 生 物 多 样 性 的
一 个 热 点 = Baltica: A mid Ordovician
diversity hotspot. ( 英 文 ). Rasmussen C
M Ø; Hansen J; Harper D A T. Historical
Biology, 2007, 19(3): 255-261
A detailed bed-by-bed study of late
Early—early Mid Ordovician Eastern
Baltic brachiopods has been used to
construct an -diversity curve through
the upper Billingen—Kunda regional
stages (Arenig-early Llanvirn). Surprisingly
the main peak in diversity does not
occur until the Volkhov-Kunda boundary,
whereas global data indicate a peak
in the mid Volkhov. On Baltica especially
the orthidines show a time lag
compared with the global data. This
study is based more than 30 000 specimens
collected from argillaceous limestones
with interfingering marls at eight
different localities in the East Baltic area.
2010010015
伊 比 利 亚 半 岛 上 白 垩 统 独 特 的 新 发
现 : 西 班 牙 Cuenca 地 区 “Lo Hueco”
的 古 生 物 遗 址 = New and exceptional
discovery in the Upper Cretaceous of the
Iberian Peninsula: the palaeontological
site of “Lo Hueco”, Cuenca, Spain. ( 英
文 ). Barroso-Barcenilla F; Cambra-Moo
O; Escaso F; Ortega F; Pascual A;
Perez-Garcia A; Rodriguez-Lazaro J;
Sanz J L; Segura M & Torices A. Cretaceous
Research, 2009, 30(5): 1268-
1278 2 图 版 .
The palaeontological site of “Lo
Hueco” was discovered in Cuenca,
Spain, in 2007. It includes a stratigraphic
interval in “Garumn” facies belonging
to the upper part of the Villalba
de la Sierra Formation. A succession of
versicolor marly mudstone levels (V, G1,
R1, G2, R2 and M) can be observed at
the site studied. This succession is partially
modified by a sandy channel structure
(C) and by a sulphated interval (S).
The C structure and the G1, G2 and R2
(lower part) levels have an extremely
rich and varied fossil concentration and
have provided to date more than 8500
macroremains. These are mainly from
vertebrates, but also from plants and invertebrates.
In general, vertebrates are
represented by mineralized bones with
an early infilling of gypsum, a ferruginous
crust, and a secondary precipitation
of gypsum; invertebrates by internal
moulds; and plants by carbonized remains.
Among the vertebrates, titanosaur
dinosaurs (some of them with partially
articulated skeletons) are by far the
most common representatives, although
lepisosteid fishes, bothremydid turtles,
squamate lizards, eusuchian crocodiles,
and ornithischian and theropod dinosaurs
are also well represented. The relative
stratigraphic position and the palaeontological
content of this site allow to
attribute it to the upper Campanianlower
Maastrichtian. Interpretation of its
materials suggests a near coast muddy
flood plain crossed by distributary sandy
channels environment, exposed to brackish
to fresh water aquatic influence.
2010010016
俄 勒 冈 州 John Day 组 ( 龟 背 湾 及 金
伯 利 段 ) 的 年 代 地 层 学 和 生 物 地 层 学
修 订 兼 论 北 美 阿 里 卡 里 阶 陆 生 哺 乳 动
物 的 年 龄 校 正 = Revised chronostratigraphy
and biostratigraphy of the John
Day Formation (Turtle Cove and Kimberly
Members), Oregon, with implications
for updated calibration of the Arikareean
North American land mammal
age. ( 英 文 ). Albright L B; Woodburne
M O; Fremd T J; Swisher C C; MacFadden
B J; Scott G R. Journal of Geology,
2008, 116(3): 211-237
Although the Arikareean North
American land mammal age was first
typified in the Great Plains, the succession
there contains significant unconformities,
a generally poor magnetic record,
relatively sparse radioisotopic
calibration, and a major faunal hiatus. In
the John Day Valley of central Oregon,
6