Form and formation of flares and parabolae based on new observations of the internal shell structure in lytoceratid and perisphinctid ammonoids
The ultrastructure of pristine shells of Jurassic and Cretaceous lytoceratid and perisphinctid ammonoids indicates that flares and parabolae represent homologous structures. Both mark an interruption of shell growth. We dismiss earlier interpretations of parabolae as actual aperture, relics of resor...
| প্রধান লেখক: | , , |
|---|---|
| বিন্যাস: | প্রবন্ধ |
| ভাষা: | English |
| প্রকাশিত: |
Institute of Paleobiology PAS
2016-08-01
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| মালা: | Acta Palaeontologica Polonica |
| বিষয়গুলি: | |
| অনলাইন ব্যবহার করুন: | http://www.app.pan.pl/archive/published/app61/app001542015.pdf |