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Swiss Journal of Palaeontology
Fig. 1 | Swiss Journal of Palaeontology

Fig. 1

From: Preservation of nautilid soft parts inside and outside the conch interpreted as central nervous system, eyes, and renal concrements from the Lebanese Cenomanian

Fig. 1

Flattened conch of Syrionautilus libanoticus with jaws and phosphatised soft parts in situ; PIMUZ 37706, Cenomanian, Hadjoula, Lebanon. All figures have the same scale. A Photo taken under white light; note the ribs and the still discernible umbilicus. B Photo taken under UV-light. C Line drawing of the structures visible in A (light grey—conch imprint without shell material; pink—calcitic part of the upper jaw; dark grey—chitinous wings of the jaws; middle brown—soft part remains with a whitish appearance); the black structures are manganese dendrites and are not drawn. D Line drawing of the structures visible in B (light grey—structures that appear light greyish under UV-light; middle grey—conch remains; dark grey—the supposed eye and formerly chitinous parts of the jaws that appear dark; turquoise—phosphatised structures with a strong fluorescence under UV-light; light yellow—irregular surface with small fluorescing patches as well as dark patches, possibly limonitic; yellow—possibly calcitic structure)

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