. Cephalopoda. Cephalopoda. FIGURE 64. Correlation of the shell of Metateuthoidea to the soft parts (muscular mantle and adnexes),or shell situs (cf. pp. 124 and 141). The changes described on pp. 144-146 are illustrated here. In comparison with Figure 62, the relationships approximate the recent forms derived from this type: the cone flag is restricted to the posterior end and is atypically (and excessively) reduced in comparison to the lateral plates (Fa) so that the fins extend anteriorly beyond their primary position (c f. also Figure 65, which shows the typical relationships better): Vr —
. Cephalopoda. Cephalopoda. FIGURE 64. Correlation of the shell of Metateuthoidea to the soft parts (muscular mantle and adnexes),or shell situs (cf. pp. 124 and 141). The changes described on pp. 144-146 are illustrated here. In comparison with Figure 62, the relationships approximate the recent forms derived from this type: the cone flag is restricted to the posterior end and is atypically (and excessively) reduced in comparison to the lateral plates (Fa) so that the fins extend anteriorly beyond their primary position (c f. also Figure 65, which shows the typical relationships better): Vr — growing anterior margin of rhachis (shown too blunt); Nk —collar bond; Sg — stellate ganglion; Mg— posterior boundary of dorsal mantle cavity, above it without letter, the cut pallial nerve; Ra - rhachis; Kl — attachment of gill band; VI — lateral pallial vein; Fa — "flag" (lateral plate); Vp — point of entrance of posterior pallial vein; Ap — same of posterior pallial artery into the muscular mantle (Mm); Co — cone; Rs - FIGURE 65. Mantle sac and fins ofMetateuthis. Left — ven- tral, right dorsal. Note the out- line of the mantle sac, fins, mantle margin; the form of the gladius can be reconstructed from the two figures: Nk - neck bond; Ta — incision of funnel; Ve — ventral corner of mantle; De — dorsal corner of mantle; Mm — muscular mantle; Fl - fin; Fr — free mar- gin of shell, ventral; Co — cone; Rs — rostrum; Fh — skin fold of fin; Sp — apex of body; Rh — rhachis; Ma — attachment of mantle to gladius; Gr — margin of gladius; Rp — posterior part of rhachis; Fa — flag; Ol —"ear lobes"; Fn — attachment of fin. 140. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Naef, Adolf. Jerusalem : Israel Program for Scientific Trans
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Keywords: ., bookcentury1900, bookcollectionbiodivers, booksubjectcephalopoda
