An Eocene orthocone from Antarctica shows convergent evolution of internally shelled cephalopods

The Subclass Coleoidea (Class Cephalopoda) accommodates the diverse present-day internally shelled cephalopod mollusks (Spirula, Sepia and octopuses, squids, Vampyroteuthis) and also extinct internally shelled cephalopods. Recent Spirula represents a unique coleoid retaining shell structures, a narr...

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Veröffentlicht in:	PloS one 2017-03, Vol.12 (3), p.e0172169-e0172169
Hauptverfasser:	Doguzhaeva, Larisa A, Bengtson, Stefan, Reguero, Marcelo A, Mörs, Thomas
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals Antarctic Regions Antarctica Biological Evolution Biology and Life Sciences Carboniferous Cephalopoda Cephalopoda - classification Cephalopoda - physiology Cephalopoda - ultrastructure Cephalopods Chitin Coleoidea Coleoids Computer and Information Sciences Conservation Convergence Earth Sciences Ecosystems and species history Ekosystem och arthistoria Electron microscopy Energy consumption Eocene Evolution Fossils - ultrastructure Genetic aspects Medicine and Health Sciences Mineralization Mollusks Morphology Museums Natural history Octopuses Paleontology Paleozoic Physical Sciences Preservation Scanning electron microscopy Sepia Shells Soft tissues Spectrometry Spirula Tissues Vampyroteuthis
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