Comparison of the morphologies of adult and embryonic shells of
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Last updated 16 Jul 2024
![Comparison of the morphologies of adult and embryonic shells of](https://www.researchgate.net/publication/339086724/figure/fig1/AS:960144250773533@1605927636550/Comparison-of-the-morphologies-of-adult-and-embryonic-shells-of-Sepia-officinalis-a-b.jpg)
Download scientific diagram | Comparison of the morphologies of adult and embryonic shells of Sepia officinalis. a, b Views of an adult shell showing the main morphological parts, a ventral view, b dorsal view. c Dorsal view of a stage 29 embryonic shell. d–f In situ localisation of embryonic shells, d Lateral view on a stage 27 embryo (X-ray image, note the mineralized statocysts anteriorly—st), e dorsal view on a stage 27 embryo, f dorsal view on a stage 29 embryo. All the shells are shown in the same position, at the top: anterior part, on the bottom: posterior part (a–c photographs, e, f optical images, d X-ray image) from publication: Comparison of embryonic and adult shells of Sepia officinalis (Cephalopoda, Mollusca) | Development and evolution of the shell in cephalopods is difficult to establish as there is few species with a calcified shell that could be fossilized (stable in geological time). Internal cuttlebone of sepiids is so particular that homologies are difficult to find. The | Shell, Cephalopoda and Mollusca | ResearchGate, the professional network for scientists.
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