海林檎

Multi tool use
提示:本条目的主题不是
海蘋果。
海林檎 化石時期: 489–358 Ma
PreЄ
Є
O
S
D
C
P
T
J
K
Pg
N
|

《自然界的藝術形態》 (1904), 圖版 90: Cystoidea
|
科學分類
|
界:
|
動物界 Animalia
|
亞界:
|
真後生動物亞界 Eumetazoa
|
門:
|
棘皮動物門 Echinodermata
|
亞門:
|
海百合亚门 Blastozoa
|
綱:
|
海林檎纲 Cystoidea
|
|
海林檎(cystoids)是已灭绝的一类棘皮动物,是棘皮动物中最古老、骨骼组织最简单的一纲。形状为球形,与苹果类似,故名(林檎为苹果的古称)。牠們和海百合有驚人的相似處,都是利用莖節附著在基底上,有一個由許多不同骨板組成的膨脹殼。具有萼和腕,萼部骨板(萼板)多达13至200块,萼板上具有板孔,沟孔系统复杂。海林檎沒有真正的肢,因此牠們利用短小沒有分叉被稱為鰓的支臂從水中濾取食物。此外,牠們的骨板上有獨特的孔結構,用來呼吸。[1]海林檎纲约有100属左右,多生活在奥陶纪和志留纪,于泥盆纪晚期绝迹。

Echinosphaerites aurantium
参考文獻
^ Cyril Walker & David Ward. 自然珍藏系列──化石圖鑑. 台灣新北市: 貓頭鷹出版社. 1996-09 (中文(繁體)).
化石网上海林檎的介绍[永久失效連結]
古生物学名词审定委员会. 古生物学名词 (M) 2. 北京: 科学出版社. 2009. ISBN 978-7-03-025433-7.
qDe369LQ8m tyJPy mu2Je 8gO,3S8 O2,YnnJ3ShOvnnD42juIgCtYUaQ,Rh hxITImqUlmKf,qwlPeAcT 2SJ65NLL fUrT7,r1xe1ws
Popular posts from this blog
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box;
}
1
I have 4 tables namely stud, country_master_academic,master_state and master_city. The main problem is that my form consists of many different fields like textbox, radio buttons, dropdown and an image file, so i am getting really confused. I can't insert data in database. Please help me. I tried many times but its not working. Thanks for the help in advance. Modal in home.php page <div class="container"> <div class="modal fade" id="add_data_modal" role="dialog"> <div class="modal-dialog"> <div class="modal-content"> ...
6
$begingroup$
This is an entry in the Fortnightly Topic Challenge #41: Short and Sweet. 1 letter only could be mean anything . With an additional letter in front , could be used as medicine component and something you definitely learn or at least heard once. Add another letter in front , you would possibly hear that many times . Add an additional letter in front , you would found an independent country . With an additional letter, in the end , you would found something related to apple . Add another letter in the end , you would found something bad . Hint: Each letter is unique .
word knowledge letters chemistry
share | improve this question
...
0
I am trying to run a scheduled task with User Group (not a single user). This is working fine when I in the field "when running a task, use the following user account:" insert BUILTIN User Group (for example: Administrators or Users). But when I try it with the created Local User Group (example: TestGroup) it is not working. The Users in the TestGroup are the same as in the Administrators group. What could be the problem? Are there some restrictions to the Created User Group compared to BUILTINUsers?
scheduled-tasks taskscheduler windowstaskschedule
share | improve this question
asked Nov 15 '18 at 15:36
Far...