Post-Triassic nautiloid genera

Post-Triassic nautiloid genera
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三叠纪后鹦鹉螺属

DOI:
10.1007/978-1-4757-9153-2_13
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发表时间:
1956
期刊:
Bulletin of the Museum of Comparative Zoology at Harvard College
影响因子:
--
通讯作者:
B. Kummel
B. Kummel
中科院分区:
--
文献类型:
--
作者:
B. Kummel

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菊石的外壳是曾经占据它的动物的自传。外壳的不同部分讲述了生命史的不同部分。生长线和其间的微小间隔,以及贝壳本身的形状,记录了身体前端发生的情况。隔膜和缝合线讲述了另一肢的故事。
The shell of an ammonoid is a kind of autobiography of the animal that once occupied it. Different parts of the shell tell different parts of the life history. The growth lines and the tiny intervals in between, along with the shape of the shell itself, record what was happening at the anterior end of the body. The septa and their sutures relate the tale of the other extremity.