英文字典中文字典51ZiDian.com

中文字典辞典英文字典 a b c d e f g h i j k l m n o p q r s t u v w x y z

belemnite

n. 箭石

箭石

WordNet (r) 3.0 (2006) (WordNet)

belemnite
n 1: a conical calcareous fossil tapering to a point at one end
and with a conical cavity at the other end containing (when
unbroken) a small chambered phragmocone from the shell of
any of numerous extinct cephalopods of the family
Belemnitidae

The Collaborative International Dictionary of English v.0.48 (gcide)

Belemnite \Be*lem"nite\, n. [Gr. ? dart, fr. ? dart, fr. ? to
throw: cf. F. b['e]lemnite.] (Paleon.)
A conical calcareous fossil, tapering to a point at the lower
extremity, with a conical cavity at the other end, where it
is ordinarily broken; but when perfect it contains a small
chambered cone, called the phragmocone, prolonged, on one
side, into a delicate concave blade; the thunderstone. It is
the internal shell of a cephalopod related to the sepia, and
belonging to an extinct family. The belemnites are found in
rocks of the Jurassic and Cretaceous ages. --
{Bel*em*nit"ic}, a.
[1913 Webster]

请选择你想看的字典辞典：

单词	字典	翻译
Belemnite	查看　Belemnite　在百度字典中的解释	百度英翻中〔查看〕
Belemnite	查看　Belemnite　在Google字典中的解释	Google英翻中〔查看〕
Belemnite	查看　Belemnite　在Yahoo字典中的解释	Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!

中文字典英文字典工具:

选择颜色:

<style type="text/css">#word104_1 br {display:none;}</style>
<form id="word104_1" method="post" action="http://ww.taiwanrate.org/index.php" target="_blank">
<div style="width: 140px;border:1px solid #000;background-color:#ffffff;padding: 0px 0px;margin: 0px 0px;align:center;text-align:center;overflow:hidden;"><div id="xcolor1_1" style="font-size:12px;color:#183a00;line-height:16px;font-family: arial; font-weight:bold;background:#94abf0;padding: 3px 1px;text-align:center;"><a href="http://ww.taiwanrate.org/" alt="英文字典中文字典" title="英文字典中文字典" id="word_name104_1" style="color:#000000;font-size:14px;text-decoration:none;line-height:16px;font-family: arial;" >英文字典中文字典</a></div><table width=100% style='align:center;text-align:left;font-size:12px;background-color:#ffffff;color:#333333;'>
<tr><td style="text-align:center;border:0"><input type=hidden name="word104_hi" value="1">输入中英文单字</td></tr><tr><td style="text-align:center;border:0"><input type="text" name="word104_input" value="" size=10 style="background-color:#ffffff;color:#000;text-decoration:none;font-family: arial;rial;border:1px solid #999;padding:1px!important;"></td></tr><tr style='line-height: 26px;'><td style="text-align:center;border:0"><input type=submit style="background-color:#ccc;color:#000;border:0 none;cursor:pointer;" value="查询字典"></td></tr></table></div>
</form>

英文字典中文字典相关资料:

Belemnitida - Wikipedia
Belemnitida (or belemnites) is an extinct order of squid -like cephalopods that existed from the Late Triassic to Late Cretaceous (and possibly the Eocene [1][2][3]) Unlike squid, belemnites had a mineralized internal skeleton that made up the cone
Belemnoidea — Wikipédia
Les bélemnites (super-ordre Belemnoidea) sont des céphalopodes marins ayant vécu du Dévonien au Crétacé Leurs fossiles, le plus souvent incomplets, ont une forme caractéristique « en balle de fusil »
Belemnites - British Geological Survey
These are the Belemnite Marls, of Pliensbachian age, which can be seen in the cliffs near Charmouth Belemnites are the best preserved fossils in this interval, and include the genera Angeloteuthis, Bairstowius, Hastites, Passaloteuthis and Pseudohastites
Belemnoidea - Wikipedia
The stable isotope composition of a belemnoid rostrum from the Peedee Formation (Cretaceous, southeast USA) has long been used as a global standard (Peedee Belemnite, "PDB") against which other isotope geochemistry samples are measured, for both carbon isotopes and oxygen isotopes
Belemnites — Wikipédia
Belemnites est un genre fossile de céphalopodes ayant vécu au Jurassique et au Crétacé Leurs fossiles ont une forme caractéristique en « balle de fusil » Leur longueur varie de 1 cm à 1 m[réf nécessaire]
What is a Belemnite Fossil? - History Hit
What is a Belemnite Fossil? Belemnites were squid-like animals belonging to the cephalopod class of the mollusc phylum This means they are related to ancient ammonites as well as modern squids, octopuses, cuttlefish and nautiluses
An Introduction to Belemnites - UK Fossil Collecting
This part of the belemnite is less commonly found as fossils than the guard, due to its more fragile nature However, when found, it may be preserved in a variety of different rock or mineral types, such as mudstone, pyrite or calcite, and may be inflated as in life or crushed flat
Bélemnites : définition et explications - AquaPortail
Les bélemnites étaient des animaux marins appartenant au phylum des mollusques et à la classe des céphalopodes Leurs plus proches parents vivants sont le calmar et la seiche Ils avaient un corps semblable à celui d'un calmar mais, contrairement au calmar moderne, ils avaient un squelette interne dur
BELEMNITE Definition Meaning - Merriam-Webster
The meaning of BELEMNITE is any of various extinct cephalopods (order Belemnoidea) especially abundant in the Mesozoic era that had internal shells and that superficially resembled and are regarded as ancestors of the squids
Définition | Belemnites : quest-ce que cest ? | planète - Futura
Les belemnites faisaient partie des acteurs majeurs des écosystèmes marins, cohabitant avec des reptiles marins tels que les ichtyosaures, les mosasaures ou encore les plésiosaures

中文字典-英文字典 2005-2009