摘要翻译：
氨虫是一群已灭绝的软体动物，属于现生鹦鹉螺属（头足类）的同一纲。在Nautili和Amnomoids中，（通常是平面螺旋）壳被分成由隔膜隔开的室，在使用寿命期间充满大气压下的气体。隔膜与外壳相交产生一条称为缝合线的曲线，在现存的和大多数化石Nautili中，这是相当简单的。与此相反，古代菊石的缝合线轻微弯曲，在进化过程中变得非常复杂，在某些情况下，广泛的褶边甚至达到了分形曲线的程度。众多的理论被提出来解释缝合类铵线的复杂性。这里提出的计算支持复杂的缝合线有助于抵消外部水压的影响的假设。此外，复杂的缝合线减少了由水压引起的壳体收缩，从而有助于提高浮力。了解氨类化合物中复杂缝合的原因不仅是古生物学中的一个重要问题，也是复杂机械结构在高压下抵抗的一个挑战性问题。
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英文标题：
《Thriving at high hydrostatic pressure: the example of ammonoids (extinct
  cephalopods)》
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作者：
Fabio Vittorio De Blasio
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最新提交年份：
2006
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分类信息：

一级分类：Quantitative Biology        数量生物学
二级分类：Other Quantitative Biology        其他定量生物学
分类描述：Work in quantitative biology that does not fit into the other q-bio classifications
不适合其他q-bio分类的定量生物学工作
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英文摘要：
  Ammonoids are a group of extinct mollusks belonging to the same class of the living genus Nautilus (Cephalopoda). In both Nautili and ammonoids, the (usually planospiral) shell is divided into chambers separated by septa that during the lifetime were filled with gas at atmospheric pressure. The intersection of septa with the external shell generates a curve called the suture line, which in living and most fossil Nautili is fairly uncomplicated. In contrast, suture lines of ancient ammonoid were gently curved and during the evolution of the group became highly complex, in some cases so extensively frilled to be considerable as fractal curves. Numerous theories have been put forward to explain the complexity of suture ammonoid lines. Calculations presented here lend support to the hypothesis that complex suture lines aided in counteracting the effect of the external water pressure. Additionally, it is found that complex suture lines diminished shell shrinkage caused by water pressure, and thus aided improve buoyancy. Understanding the reason for complex sutures in ammonoids does not only represent an important issue in paleobiology, but is also a challenging problem in the resistance of complex mechanical structures subjected to high pressure.
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PDF链接：
https://arxiv.org/pdf/q-bio/0605029