- 更多网络例句与菊石类相关的网络例句 [注：此内容来源于网络，仅供参考]
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The strata in this section cover three lithostratigraphic units, seven conodont zones, five ammonoid zones and three bivalve zones. Two normal and two reversed magnetic polarity zones as well as the cyclic sequences corresponding to the Milankovitch climate periods driven by the Earth's orbit are well recognized in the lower part of the section.
该剖面包括3个岩石地层单元、7个牙形石带、5个菊石带、3个双壳类带；在剖面下段地层中识别出2个正向磁性带和2个反向磁极性带；与地球轨道天文周期相对应的Milankovitch气候沉积旋回也可以明确地辨认；碳氧同位素δ13C演变呈现两次大的旋回。
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Of these , the ammonites are very interesting and important.
其中，菊石是一种非常有趣，非常重要的的甲壳类动物。
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Abundant fossils such as sporopollen,corals and ammonites were collected from the formerly Upper Triassic Keleqinghe Group in the Dahongliutan region,western Kunlun in 2003 to 2005.These fossils are mostly traced back to the Permian,and thus the Group is redivided into the Permian Huangyangling Group.
在西昆仑大红柳滩一带地质填图和剖面实测过程中，在原划上三叠统克勒青河群中采到了大量孢粉和珊蝴、菊石类等化石，经鉴定其时代主体为二叠纪；经区域地层对比，将其改归二叠系黄羊岭群。
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Crinoids, ammonoids and bivalves dwelt on the stems and lived on pseudoplanktons. They were gradually deposited on the sea bottom with increasing biomass of the dwelling organisms and lime content, and at last concretions were formed.
海百合、双壳类和菊石类栖息在植物茎干上营假浮游生活，随着栖息生物量和化学沉积物灰泥的增加，逐渐沉积在海底形成结核。
- 更多网络解释与菊石类相关的网络解释 [注：此内容来源于网络，仅供参考]
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ammonite：菊石
这一次,他们只发现了鱼、菊石(ammonite)等海洋生物的化石,爬行类和哺乳动物的化石杳无踪迹. 河对面的两名成员也没有值得称道的发现,同样沮丧不已. 傍晚,我们来到了距河谷底部1,000米高的地方,这是一片红褐色的火山灰沉积物,
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Agnostus：球接子属(三叶虫类
"Agnostida","球接子目(三叶虫类)" | "Agnostus","球接子属(三叶虫类,3)" | "Agoniatites","无稜角石属,无角菊石属,无棱菊石属(头足类,D)"
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Agoniatites：无稜角石属,无角菊石属,无棱菊石属(头足类,D)
"Agnostus","球接子属(三叶虫类,3)" | "Agoniatites","无稜角石属,无角菊石属,无棱菊石属(头足类,D)" | "Agoniatitida","无角菊石目(头足类,D1-T3)"
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ammonites：菊石类
不过,偶然有些生物如菊石类(ammonites)在第二纪却突然神秘地消失了. 物种渐渐不断地消失是生物逐渐被更适应环境的后代所淘汰的必然现象. 但是,如果大多数古生物的灭亡只限于几次地球上的大灾难(例如地球温度突然变化,
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ammonites：菊石类(头足类,T-J)
"ammonite","鲕状岩" | "ammonites","菊石类(头足类,T-J)" | "ammoniticone","菊石壳"
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ammonoids, ammonites：菊石类
体管索 siphuncular cord | 菊石类 ammonoids, ammonites | 两侧压缩旋环 compressed whorl
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Ammonoidea：菊石亚纲(头足类)
"铵钾石膏","ammonium-syngenite" | "菊石亚纲(头足类)","Ammonoidea" | "非晶质","amorphous"
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belemnites：箭石类
Bactritid形成了一个独特的过渡种群并被认为稍后进化形成最新的头足类包括蛸亚纲成员(箭石类(belemnites) , 吸血鬼乌贼类(vampyromorphs ), 枪乌贼类(squid), 章鱼类(octopus) , 墨鱼类(cuttlefish)及 船蛸类(Argonauta) 及 菊石亚纲成员ammonites.
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Perisphinctes：旋菊石
斯台芬菊石(STEPHANOCERAS)兴旋菊石(PERISPHINCTES)两属群在侏罗纪占优势. 侏罗纪的箭石(BELEMNITES)类数量大增,属群也趋于繁多,颁地区更广泛. 瓣鳃类以三角蛤(TRIGONIA)、卷嘴蛎(GRYPHAEA)、笋海螂(PHOLADOMYA)等科、属的大量出现,
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Dinosaurs：恐龙类
有些生物如恐龙类(Dinosaurs)、菊石类(Ammonoids)、和三叶虫类(Trilobites)等已经绝种多时,我们只有从化石中去了解它们,不过有时侯对其他和它们有密切关系的现存动物的研究,亦可以获得多少有关它们的知识.