Abstract
A survey of serial, histological sections of cephalopod embryos at early and advanced morphogenetic stages provided evidence that always the cutting edge of the lower jaw is first connected, by a thin organic membrane, to the cutting edge of the upper jaw. The lower jaw rudiment does not exhibit any separation of the right from the left half. The evolutionary origin of the lower jaw, which has no obvious homologue in other molluscs, remains a matter of debate.
Kurzfassung
Die Untersuchung histologischer Schnittserien von Cephalopodenembryonen in frühen und fortgeschrittenen Morphogenesestadien ergab, dass die Beisskante des Unterkiefers immer zuerst mit der Beisskante des Oberkiefers durch eine dünne organische Membran verbunden ist. Der Unterkiefer zeigt keine sichtbare Trennung in eine rechte und eine linke Hälfte. Der evolutive Ursprung des Unterkiefers, für den bei anderen Mollusken kein Ho-mologon vorzuliegen scheint, bleibt Gegenstand der Diskussion.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Adam, W. 1986. La radule et les mandibules de quelques espèces d’Idiosepius Steenstrup, 1881 (Mollusca Cephalopoda Decapoda). — Bulletin de l’Institut Royal des Sciences Naturelles de Belgique, Biologie56: 149–154.
Bandel, K. 1988. Operculum and buccal mass of ammonites. —Wiedmann, J. &Kullmann, J., eds., Cephalopods — Present and Past: 653–676, Stuttgart (Schweizerbart).
Boletzky, S. von 1967. Die embryonale Ausgestaltung der frühen Mitteldarmanlage vonOctopus vulgaris Lam. — Revue Suisse de Zoologie74: 555–562.
Boletzky, S. von 1974. The “larvae” of Cephalopoda: a review. — Thalassia Jugoslavica10: 45–76.
Boletzky, S. von 1999. Cephalopod development and evolution: biological insight into ontogenesis as a guide to paleomorpholgy. — In:Oloriz, F. &Rodriguez-Tovar, eds., Advancing research on living and fossil cephalopods: 3–11, New York (Kluwer Academic/Plenum Publishers).
Boletzky, S. von 2003. Biology of early life stages in cephalopod molluscs. — Advances in Marine Biology44: 141–203.
Clarke, M.R. &Maddock, L. 1988. Beaks of living coleoid Cephalopoda. — In:Clarke, M.R. &Trueman, E.R., eds., Paleontology and neontology of cephalopods. — In:Wilbur, K., ed., The Mollusca12: 123–131, San Diego (Academic Press).
Dilly, P.N. &Nixon, M. 1976. The cells that secrete the beaks in octopods and squids. — Cell and Tissue Research167: 229–241.
Engeser, T. 1996. The position of the Ammonoidea within the Cephalopoda. — In:Landman, N.H.;Tanabe, K. &Davis, R.A., eds., Ammonoid Paleobiology: 3–22, New York (Plenum Press).
Fuchs, E. 1973. Organo- und Histogenèse des Darmsystems, embryonale Blutbildung und Dotterabbau beiEledone cirrosa Lam. (Cephalopoda, Octopoda). — Zoologische Jahrbücher (Abt. Anatomie)91: 31–92.
Gosllner, T.M. 1994. Gastropoda: Opisthobranchia. — In:Harrison, F.W., ed., Microscopic Anatomy of Invertebrates, Vol. 5: Mollusca I, Chapter 5: 253–355, New York (Wiley-Liss).
Haszprunar, G. &Schaefer, K. 1997. Monoplacophora. — In:Harrison, F.W., ed., Microscopic Anatomy of Invertebrates, Vol. 6B: Mollusca II, Chapter 4: 415–457, New York (Wiley-Liss).
Kear, A.J. 1994. Morphology and function of the mandibular muscles in some coleoid cephalopods. — Journal of Marine Biological Association of the United Kingdom74: 801–822.
Klug, C;Schweigert, G.;Dietl, G. &Fuchs, D. 2005. Coleoid beaks from the Nusplingen Lithographic Limestone (Upper Kimmeridgean, SW Germany). — Lethaia38: 173–192.
Lehmann, U. 1990. Ammonoideen. — 257 p., Stuttgart (Enke).
Luchtel, D.L.;Martin, A.W.;Deyrup-Olsen, I. &Boer, H.H. 1997. Gastropoda: Pulmonata. — In:Harrison, F.W., ed., Microscopic Anatomy of Invertebrates, Vol. 6B: Mollusca II, Chapter 5: 459–718, New York (Wiley-Liss).
Meister, G. 1972. Organogenese vonLoligo vulgaris Lam. (Mollusca, Cephalopoda, Teufhoidea, Myopsida, Loliginidae). — Zoologische Jahrbücher (Abt. Anatomie)89: 247–300.
Naef, A. 1923. Die Cephalopoden (Systematik). — Fauna Flora Golfo Napoli35 (I-1): 1–863. [English translation available from Smithsonian Institution Libraries, Washington D.C., 20560, USA].
Naef, A. 1928. Die Cephalopoden (Embryologie). — Fauna Flora Golfo Napoli35 (I-2): 1–357. [English translation available from Smithsonian Institution Libraries, Washington D.C., 20560, USA].
Nixon, M. 1988. The buccal mass of fossil and recent Cephalopoda. — In:Clarke, M.R. &Trueman, E.R., eds., Paleontology and neontology of cephalopods. — In:Wilbur, K., ed., The Mollusca12: 103–122, San Diego (Academic Press).
Shimek, R.L. &Steiner, G. 1997. Scaphopoda. — In:Harrison, F.W., ed., Microscopic Anatomy of Invertebrates, Vol.6B: Mollusca II, Chapter 6: 719–781, New York (Wiley-Liss).
Tanabe, K. &Fukuda, Y. 1987. Mouth part histology and morphology. — In:Saunders, W.B. &Landman, N.H., eds.,Nautilus. The biology and paleobiology of a living fossil: 313–322, New York (Plenum Press).
Tanabe, K. &Landman, N.H. 2002. Morphological diversity of the jaws of Cretaceous Ammonoidea. — In:Summesberger, H.;Histon, K. &Daurer, A., eds., Cephalopods — Present and Past. — Abhandlungen der Geologischen Bundesanstalt57: 157–165.
Uyeno, T.A. &Kier, W.M. 2005. Functional morphology of the cephalopod buccal mass: a novel joint type. — Journal of Morphology264: 211–222.
Uyeno, T.A. &Kier, W.M. 2007. Electromyography of the buccal musculature of octopus (Octopus bimaculoides): a test of the function of the muscle articulation in support and movement. Journal of Experimental Biology210: 118–128.
Voltzow, J. 1994. Gastropoda: Prosobranchia. — In:Harrison, F.W., ed., Microscopic Anatomy of Invertebrates, Vol. 5: Mollusca I, Chapter 4: 111–252, New York (Wiley-Liss).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
von Boletzky, S. Origin of the lower jaw in cephalopods: a biting issue. Paläontol Z 81, 328–333 (2007). https://doi.org/10.1007/BF02990182
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02990182