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Fig. 2 | Swiss Journal of Palaeontology

Fig. 2

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. 2

Isolated soft parts of the nautilid Syrionautilus libanoticus with the crustacean Corazzatocarcinus hadjoulae (mauve in E, F); PIMUZ 37707, Cenomanian, Hadjoula, Lebanon. All figures have the same scale. A Photo of the specimen taken under white light; mainly the rhyncholite is well visible. B, C Long exposure photo taken with UV light at a distance of 40 cm; note the bright bluish surfaces representing phosphatised structures; the jaw remains appear dark; note the two symmetrically arranged pairs of dark patches next to and behind the jaws. D Line drawing of the structures visible in A (light grey—even surface surrounding the specimen; pink—calcitic part of the upper jaw; dark grey—inner lamella of upper jaw; middle brown—soft part remains with a brownish appearance; orange—limonite-coloured structures; light yellow—irregular surface with patches of phosphate and possible limonite). E, F Line drawings of the structures visible in B and C (light grey—structures that appear middle greyish under UV-light; dark grey—formerly chitinous parts of the jaws that appear dark; turquoise—phosphatised structures with a strong fluorescence under UV-light; light green—phosphatised structures with a weak fluorescence under UV-light; light yellow—irregular surface with small fluorescing patches as well as dark patches, possibly limonitic; light grey—even surface that appears light grey)

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