Different kinds of fossil brachiopod shells have different preservation.

6地質(zhì)歷史時(shí)期不同類別腕足化石殼體的保存程度可能不同日韩欧美性爱啪啪网。

This discovery has provided a good criterion for studying the original carbon and oxygen isotopes of seawater by using the brachiopod shell fossil.

這一發(fā)現(xiàn)為利用腕足化石研究海水原始碳氧同位素提供了有力的判據(jù)。

The brachiopod fossils were systemically collected at the Deriangma-Xiala section in Xainza area, and its correlation with conodont zones was recognized too.

系統(tǒng)采集了申扎地區(qū)德日昂瑪一下拉剖面的腕足類化石国产呦在线，首次建立了腕足類和牙形石化石帶的對比關(guān)系国产精品国产AV永久入口久久久。

Based on the analysis on brachiopod fossils of the late middle Permian,the brachiopod extinction in Pre-Lopingian event of late middle Permian in this area can be divided into two sub screens: the first screen in the end of earlier Wushisanti Subage a...

通過川渝地區(qū)中二疊世晚期的腕足動(dòng)物化石資料的研究，表明本地區(qū)中二疊世晚期的樂平世事件中腕足動(dòng)物的滅絕可劃分為前后2個(gè)不同的次級(jí)幕：早期的五十三梯亞期之末的第一幕和晚期的倒鉆巖亞期之末的第二幕日韩精品草草视频在线播放，且第二幕的滅絕規(guī)模要比第一幕更大人人操人人看人人干人人爽。

Based on the analysis on brachiopod fossils of the late middle Permian, the brachiopod extinction in The Lopingian event of late middle Permian in this area can he divided into two sub screens: the first screen in the end of earlier Wushisanti Subage and the second screen in the end of later Daozuanyan Subage. The second screen's extinct scope is larger than the first screen's.

通過川渝地區(qū)中二疊世晚期的腕足動(dòng)物化石資料的研究，表明本地區(qū)中二疊世晚期的樂平世事件中腕足動(dòng)物的滅絕可劃分為前后2個(gè)不同的次級(jí)幕：早期的五十三梯亞期之末的第一幕和晚期的倒鉆巖亞期之末的第二幕，且第二幕的滅絕規(guī)模要比第一幕更大欧美精品视频在线观看免费。

The average δ〓O value of brachiopod shells from Givetian in Longmenshan area is comparable with those of the same geologic time from North America and Australia. The three continents were in the same latitudes although the Australia was in the south hemisphere, hence the annual average temperatures.

5龍門山地區(qū)中泥盆世腕足化石的δ〓O與同時(shí)期北美和澳大利亞腕足化石的δ〓O值非常接近99视频在线免费，它們當(dāng)時(shí)都是地處低緯度地區(qū)，海水年平均溫度相同一级a爱视频免费网站aaa，因此三個(gè)地區(qū)海洋的δ〓O值也應(yīng)相同欧美精品永久在线观看。

A lot of brachiopod and mollusk fossils,including 12 species of 8 genera of brachiopod,14 species of 8 genera of bivalve and 5 species of 4 genera of gasteropod,are collected from the marl and mudstone situated on the bottom of Benxi Formation in Liujiang basin.The mollusk fossils are directly preserved in the upper part or facies change bed of brachiopod fossil bed.Up to now, the materials is firstly reported,especially the mollusk.

柳江盆地本溪組底部泥灰?guī)r及相鄰泥巖中產(chǎn)有豐富的腕足動(dòng)物、軟體動(dòng)物化石成年WWXX视频在线观看，經(jīng)鑒定有腕足動(dòng)物10屬12種H动漫无码网站免费看网址免费A片，雙殼類8屬14種和腹足類4屬5種，軟體動(dòng)物保存于含腕足動(dòng)物層的相變巖層或直接位于其上層日本视频高清WWW，到目前為止，這一豐富材料尚屬首次綜合報(bào)道久久一免费视频。

Different secondary layers of fossil brachiopod shells have different preservation and the way by which the shells' primary isotope ratios be influenced by diagenesis: postdepositional alternation of δ〓O国产精品视频一二三四五、δ〓C has no effect on the low-Mg calcite minerals of the shells, while it alters the whole shell's isotopic compositions by microcrack fillings, even with the well preserved shells.

1成巖后生作用對腕足化石殼體不同結(jié)構(gòu)單元的改造方式及改造程度不同：成巖后生作用對保存較好的腕足化石殼體的改造是以微裂隙充填方式進(jìn)行，而對低鎂方解石本身并沒有影響免费看美女隐私不遮网站。

The strata between the carbonate rocks of the Chaguoluoma Formation (Devonian-Early Carboniferous) and carbonate rocks of the Xiala Formation consist mainly of clastic rocks with limestone, which are marked by glaciomarine deposits in terms of sedimentation and mixing of Gondwanan and Tethyan faunas in terms of fossils.

古生物群混生的現(xiàn)象為石炭紀(jì)—二疊紀(jì)的特提斯生物區(qū)與岡瓦納生物區(qū)之間的地層和古生物對比建立了一座橋梁中文字幕乱码亚洲无限码。永珠組中上部地層中同時(shí)產(chǎn)有牙形石和腕足類，牙形石的研究表明其時(shí)代為晚石炭世莫斯科期白白免费发布在线观看，而腕足類的研究則表明其為早二疊世薩克馬爾期91偷啪自啪在线播放第二十页。

This thesis places its emphasis on"vital effect"of fossil brachiopods which has been attracting many attentions in studies of the isotope biogeochemistry.

2對目前腕足化石氧、碳同位素研究領(lǐng)域中倍受關(guān)注的同位素生命效應(yīng)問題国产精品手机免费，本論文做了重點(diǎn)研究：在詳細(xì)的腕足化石保存程度研究基礎(chǔ)上wwwav72com，對原始生活環(huán)境相同、保存程度也相同的化石進(jìn)行了科91视频精品网、屬免费女厕偷拍一级A片、種三個(gè)級(jí)別上氧、碳同位素組成的對比78摸免费人成视频在线观看免费看，所研究的化石都沒有顯示出可檢測的同位素生命效應(yīng)性感粉嫩裸体美女自慰。

brachiopod：腕足類動(dòng)物

brachiate 十字對生的 | brachiopod 腕足類動(dòng)物 | brachycephalic 短頭顱的

brachiopod：腕足類動(dòng)物的一種

brachiophore support | 腕基支柱 | brachiopod | 腕足類動(dòng)物的一種 | Brachiopoda | 腕足門

anhysteretic：非磁滯的,非滯性的

"Anhydrous period","無水時(shí)期" | "anhysteretic","非磁滯的,非滯性的" | "Anidanthus","阿尼丹特貝屬(腕足類,C3-P)"

brachiate：十字對生的

brachial 臂的 | brachiate 十字對生的 | brachiopod 腕足類動(dòng)物

Brachiopoda：腕足動(dòng)物門

鳳梨科的有我們熟 果實(shí)或者植物的營養(yǎng)體有較為厚實(shí)的果皮或者變態(tài)儲(chǔ)存器官,且細(xì)胞破裂后有較多的細(xì)胞液流出的植物品種叫做多肉多漿植物. [名稱]酸漿貝 [拉丁文]Terebratella coreanica [科屬]腕足動(dòng)物門(Brachiopoda) 具鉸綱終穴目...

Brachiopoda：腕足類

有些類群如魚類精品国产污污免费网站入口下载、被囊類(Tunicata)a片人人人人v人人人人人人a片人、蔓足類(Cirripedia)、苔蘚動(dòng)物(Bryozoa)和海綿動(dòng)物(Spongia)等的種數(shù),隨著深度增大而明顯下降;十足目甲殼類(Decapoda)亚洲麻烦在线视频、腕足類(Brachiopoda)和扁形動(dòng)物渦蟲類(Turbellaria)等,在水深超過 6000米的超深淵帶尚未發(fā)現(xiàn).

Brachiopoda：腕足門

brachiopod | 腕足類動(dòng)物的一種 | Brachiopoda | 腕足門 | brachistochrone | 最速降線,捷線

uniplicate：單褶型(腕足類)

單峰態(tài)沈積物 unimodal sediment | 單褶型(腕足類) uniplicate | 單系列的 uniserial

brachiopods：腕足類

再者如甲殼類,腕足類(Brachiopods),三葉蟲(Trilobites)等寒武紀(jì)生物化石,都是突然出現(xiàn). 它們都可算是較高等的動(dòng)物,由尤是三葉蟲屬節(jié)肢動(dòng)物,依照進(jìn)化論的觀點(diǎn),必然要經(jīng)過十幾億年才可能形成. t_櫚型彝巷(transitionalseries)的袂失沈灸'是些&J昆蟲的情形.

Articulate Brachiopods：有絞腕足類

有節(jié)的 articulate | 有絞腕足類 Articulate Brachiopods | 木賊綱 Articulatineae