Topics in Geobiology Volume 6, 2010, pp 249-256

Histology of the Long Digital Tentacles

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Abstract

Nautilus differs from the coleoid cephalopods in possessing approximately 90 tentacles that lack both sucker disks and arm hooks. Although the gross anatomy and functional morphology have been described previously (Owen, 1832; Griffin, 1900; Dean, 1901; Willey, 1902; Bidder, 1962; Stenzel, 1964), ultramicroscopic structures and functional properties have been studied in detail only by Barber and Wright (1969). This chapter is a summary of the results of a histological examination of the paired long digital tentacles in two species of Nautilus (N. macromphalus Sowerby and N. pompilius Linnaeus).