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辽 宁 北 票 首 次 发 现 初 鸟 类 化 石 - 东 方 吉 祥<br />

鸟 = A new avialian bird-Jixiangornis orientalis<br />

gen. et sp. nov.-from the Lower Cretceous<br />

of western Liaoning, NE China. ( 中 文 ).<br />

季 强 ; 姬 书 安 ; 张 鸿 斌 ; 尤 海 鲁 ; 张 建 平 ; 王 丽 霞 ;<br />

袁 崇 喜 ; 季 鑫 鑫 . 南 京 大 学 学 报 ( 自 然 科 学<br />

版 ), 2002, 38(6): 723-736<br />

本 文 记 述 了 辽 宁 北 票 义 县 组 一 件 新 的 初<br />

鸟 类 (Avialae) 化 石 , 这 是 继 中 华 神 州 鸟<br />

(Shenzhouraptor sinensis Ji et al.2002) 之<br />

后 初 鸟 类 化 石 的 又 一 发 现 。 它 以 上 颌 无 齿<br />

而 具 角 质 喙 、 胸 骨 发 达 且 具 龙 骨 突 、 前 肢<br />

显 著 长 于 后 肢 等 特 征 与 始 祖 鸟<br />

(Archaeopteryx) 不 同 , 以 后 肢 第 Ⅰ 趾 爪<br />

已 反 转 而 与 其 它 3 趾 对 握 等 特 征 与 神 州 鸟<br />

相 区 别 , 该 化 石 被 命 名 为 东 方 吉 祥 鸟 ( 新<br />

属 、 新 种 )(Jixiangornis orientalis gen.et<br />

sp. nov.)。 中 国 辽 西 新 近 发 现 的 中 华 神 州<br />

鸟 和 东 方 吉 祥 鸟 ( 新 属 、 新 种 ) 目 前 是 世<br />

界 上 最 古 老 最 原 始 真 正 具 有 角 质 喙 和 飞 行<br />

能 力 的 原 始 鸟 类 。<br />

哺 乳 类<br />

2008010335<br />

关 于 缅 甸 中 新 统 Tetraconodon 的 修 订 及 对<br />

该 属 一 新 种 的 描 述 = A revision of Tetraconodon<br />

(Mammalia, Artiodactyla, Suidae)<br />

from the Miocene of Myanmar and description<br />

of a new species. ( 英 文 ). Thaung H;<br />

Tsubamoto T; Takai M; Natori M; Egi N;<br />

Maung M; Chit S. Paleontological Research,<br />

2005, 9(3): 243-253<br />

We describe five new dento-gnathic specimens<br />

of Tetraconodon, a genus of Miocene<br />

tetraconodontine suid (Mammalia, Artiodactyla),<br />

discovered in Myanmar (=Burma). In<br />

Myanmar, we recognized three distinct species<br />

of Tetraconodon (T. minor, T. intermedius<br />

and T. malensis sp. nov.) and one specifically<br />

undetermined specimen, which is here<br />

named Tetraconodon sp. cf. T. intermedius.<br />

The new species, T. malensis, has characteristics<br />

of Tetraconodon, such as extremely<br />

enlarged P_4 and simple and relatively small<br />

M_3. It is distinct from the other Tetraconodon<br />

species in being much smaller, suggesting<br />

that it is the most primitive known Tetraconodon<br />

species. The dental size and characteristics<br />

of T. malensis suggest that Tetraconodon<br />

was derived during the late middle Miocene<br />

from the early middle Miocene Conohyus sindiensis,<br />

which was discovered in the Siwalik<br />

Group of Indo-Pakistan and Nepal and has<br />

also been found in the middle Miocene deposits<br />

of Thailand, or a close relative. The discovery<br />

of the most primitive form in Myanmar<br />

suggests that Tetraconodon may have originated<br />

in Myanmar.<br />

2008010336<br />

根 据 阿 根 廷 更 新 世 新 材 料 对 Theriodictis<br />

platensis 的 生 态 形 态 分 析 = Ecomorphological<br />

analysis of the hypercarnivore canid<br />

Theriodictis platensis Mercerat based on new<br />

material from the Pleistocene of Argentina.<br />

( 其 他 ). Prevosti F J; Palmqvist P.<br />

Ameghiniana, 2001, 38(4): 375-384<br />

Theriodictis was part of a South American<br />

clade of canids showing hypercarnivorous<br />

characters such as large carnassial teeth lacking<br />

the metaconid and the hypoconid, wide<br />

palate, and small postcarnassial molars. This<br />

genus comprises two species: T. platensis<br />

Mercerat, from the pampean region of Argentina,<br />

and T. tarijensis (Ameghino) from Tarija,<br />

Bolivia. Both are restricted to the Ensenadan<br />

Age, early to earliest late Pleistocene (Biozone<br />

of Tolypeutes pampeus, 1.8 to 0.5 Ma). The<br />

discovery of an almost complete skeleton of T.<br />

platensis (MLP 96-IX-1-1) permits an ecomorphological<br />

analysis. This approach uses<br />

principal component and discriminant function<br />

analyses, as well as multiple regression<br />

analysis for estimating ecomorphological adaptations<br />

and body mass in extinct canids. The<br />

body mass estimated for T. platensis was similar<br />

to37 kg. The craniodental morphology of<br />

this species was similar to that shown by extant<br />

hypercarnivorous canids whose diet includes<br />

>70% of herbivores and other carnivores.<br />

The potential ungulate prey of T, platensis<br />

included camelids (Lama sp.), cervids<br />

[Epieurycerus truncus Ameghino, Antifer ensenadensis<br />

(Ameghino)], equids [Equus<br />

(Amerhippus) sp., Hippidion devillei (Gervais)],<br />

and tayassuids (Catagonus metropolitanus<br />

Ameghino), as well as giant rodents<br />

(Neochoerus sp.), mesotherids (Mesotherium<br />

cristatum Serres), and giant dasypodids [Eutatus<br />

seguini (Gervais), Propraopus grandis<br />

Ameghino, Pampatherium sp.].<br />

2008010337<br />

阿 根 廷 布 宜 诺 斯 艾 利 斯 省 Tandilia 晚 更 新<br />

世 和 全 新 世 山 Galea 属 = Late Pleistocene<br />

and Holocene Galea (Rodentia, Caviidae)<br />

from the eastern Sierras de Tandilia, Buenos<br />

Aires Province, Argentina. ( 其 他 ). Quintana C<br />

A. Ameghiniana, 2001, 38(4): 399-407<br />

A new record (Galea tixiensis n. sp.) and<br />

the anatomy of Galea from the archaeological<br />

89

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