Abstract
The hyobranchial skeleton of the porolepiform rhipidistian Laccognathus panderi Gross is described. The double composition of the ceratohyal in crossopterygians is proposed. The urohyal of porolepiforms, like that of Latimeria, consists of cartilaginous axial and membranous peripheral portions. The differences between porolepiforms and osteolepiforms in the structure of the hyobranchial skeleton, particularly, in the shape of the urohyal are attributable to different arrangements of the hypobranchial muscles. Porolepiforms and coelacanths have retained the coracomandibularis muscle inherited from early gnathostomes, whereas the same muscle of osteolepiforms was transformed into the geniohyoideus muscle. This transformation is accounted for by functional changes in the hyobranchial apparatus.
Similar content being viewed by others
References
E. Ph. Allis, “The Skull and the Cranial and First Spinal Muscles and Nerves in Scomber scomber,” J. Morphol. 18(1–2), 45–328 (1903).
E. Ph. Allis, “The Cranial Anatomy of Polypterus, with Special Reference to Polypterus bichir,” J. Anat. 56(3–4), 189–294 (1922).
G. Ch. Anker, “Morphology and Kinetics of the Head of the Stickleback, Gasterosteus aculeatus,” Trans. Zool. Soc. London 32, 311–416 (1974).
G. Arratia and H.-P. Schultze, “The Urohyal: Development and Homology within Osteichthyans,” J. Morphol. 203, 247–282 (1990).
W. E. Bemis and G. V. Lauder, “Morphology and Function of the Feeding Apparatus of the Lungfish Lepidosiren paradoxa (Dipnoi),” J. Morphol. 187, 81–108 (1986).
P. L. Forey, P. E. Ahlberg, E. Lukševičs, and I. Zupinš, “A New Coelacanth from the Middle Devonian of Latvia,” J. Vertebr. Paleontol. 20(2), 243–252 (2000).
H. Fox, “Early Development of the Head and Pharynx of Neoceratodus with a Consideration of Its Phylogeny,” J. Zool. London. 146(4), 470–554 (1965).
G. A. Gimmel’reich, “The Visceral Apparatus of Selachians As an Organ of Ingestion,” Tr. Inst. Zool. Akad. Nauk Ukr. SSR 4, 1–120 (1952).
E. Jarvik, “On the Visceral Skeleton in Eusthenopteron with a Discussion of the Parasphenoid and Palatoquadrate in Fishes,” Kungl. Svenska Vetenskapsakad. Handl. Fjarde Ser. 5(1), 1–104 (1954).
E. Jarvik, “The Composition of the Intermandibular Division of the Head in Fish and Tetrapods and the Diphyletic Origin of the Tetrapod Tongue,” Kungl. Svenska Vetenskapsakad. Handl. Fjarde Ser. 9(1), 1–74 (1963).
E. Jarvik, “Middle and Upper Devonian Porolepiformes from East Greenland with Special Reference to Glyptolepis groenlandica n. sp.,” Medd. Grønl. 187(2), 1–307 (1972).
Z. Johanson and P. E. Ahlberg, “A New Tristichopterid (Osteolepiformes: Sarcopterygii) from the Mandagery Sandstone (Late Devonian, Famennian) near Canowindra, NSW, Australia,” Trans. R. Soc. Edinburgh, Earth Sci. 88, 39–68 (1997).
V. M. Kurshs and L. A. Lyarskaya, “Taphonomy of the Ichthyofauna in Clays of the Lode Quarry and Certain Questions of Paleogeography of Northern Latvia in the Early Frasnian Time,” in Problems of Regional Geology of the Baltic Region and Belarus (Riga, 1973), pp. 109–119 [in Russian].
G. V. Lauder, “The Role of the Hyoid Apparatus in the Feeding Mechanism of the Coelacanth Latimeria chalumnae,” Copeia, No. 1, 1–9 (1980a).
G. V. Lauder, “Evolution of the Feeding Mechanism in Primitive Actinopterygian Fishes: A Functional Anatomical Analysis of Polypterus, Lepisosteus and Amia,” J. Morphol. 163, 283–317 (1980b).
O. A. Lebedev, “Morphology of a New Osteolepidid Fish from Russia,” Bull. Mus. Nat. Hist. Natur., Sér. 4, Sect. C 17(1–4), 287–341 (1995).
L. A. Lyarskaya, Placoderms from the Devonian of the Baltic Region: Asterolepididae (Zinatne, Riga, 1981) [in Russian].
R. S. Miles, “Dipnoan (Lungfish) Skulls and the Relationships of the Group: A Study Based on New Species from the Devonian of Australia,” Zool. J. Linn. Soc. 61, 1–328 (1977).
J. Millot and J. Anthony, Anatomie de Latimeria chalumnae, Vol. 1: Squelette, muscles et formations de soutien (Paris, 1958).
J. Millot, J. Anthony, and D. Robineau, Anatomie de Latimeria chalumnae, Vol. 3: Appareil digestif. App. respiratoire... (Paris, 1978).
S. A. Moss, “The Feeding Mechanism of Sharks of the Family Carcharhinidae,” J. Zool. London 167(4), 423–436 (1972).
T. Ørvig, “Remarks on the Vertebrate Fauna of the Lower Upper Devonian of Escuminac Bay, P. Q., Canada, with Special Reference to the Porolepiform Crossopterygians,” Ark. Zool. 10(6), 367–426 (1957).
A. S. Severtsov, “Evolution of the Hyobranchial Apparatus of Larval Caudates,” Tr. Zool. Inst. Akad. Nauk USSR 46 (Morphology of Lower Vertebrates), 125–168 (1968).
A. S. Severtsov, “Evolution of the Mechanism of Respiratory Movements in Anuran Amphibians,” Zool. Zh. 50(1), 89–104 (1971).
A. S. Severtsov, “Mechanism of Movements of the Hyoid Apparatus and Probable Reasons for Lung Reduction in Caudates,” Zool. Zh. 51(1), 94–112 (1972).
K. S. Thomson, “The Biology of the Lobe-finned Fishes,” Biol. Rev. 44(1), 91–154 (1969).
E. I. Vorobyeva, “Observations on Two Rhipidistian Fishes from the Upper Devonian of Lode, Latvia,” Zool. J. Linn. Soc. 70, 191–201 (1980).
E. I. Vorobyeva, “A New Species of Laccognathus (Porolepiform Crossopterygians) from the Devonian of Latvia,” Paleontol. Zh., No. 3, 76–87 (2006) [Paleontol. J. 40 (3), 312–322 (2006)].
C. D. Wilga, P. C. Wainwright, and P. Motta, “Evolution of Jaw Depression Mechanics in Aquatic Vertebrates: Insights from Chondrichthyes,” Biol. J. Linn. Soc. 71, 165–185 (2000).
R. Winterbottom, “A Descriptive Synonymy of the Striated Muscles of the Teleostei,” Proc. Acad. Natur. Sci. Philad. 125(12), 225–317 (1974).
Author information
Authors and Affiliations
Additional information
Original Russian Text © A.A. Kanyukin, 2006, published in Paleontologicheskii Zhurnal, 2006, No. 3, pp. 63–75.
Rights and permissions
About this article
Cite this article
Kanyukin, A.A. Hyobranchial skeleton and hypobranchial muscles of rhipidistians. Paleontol. J. 40, 297–311 (2006). https://doi.org/10.1134/S0031030106030117
Received:
Issue Date:
DOI: https://doi.org/10.1134/S0031030106030117