Paläontologische Zeitschrift

, Volume 67, Issue 1–2, pp 145–168 | Cite as

The subdivisions and fusions of the exoskeletal skull bones ofDiscosauriscus austriacus (Makowsky 1876) and their possible homologues in rhipidistians

  • Josef Klembara Bratislava


Two localities in the Boskovice Furrow region of Moravia (Czecho-Slovakia) have produced new, well preserved material of the Lower Permian tetrapodDiscosauriscus austriacus (Makowsky 1876). A relatively large number of specimens have been found with some dermal skull roof bones partly or fully subdivided, and/or fused. These are the first records of such subdivisions and fusions in this tetrapod and the following bones are discussed: frontal, postfrontal, parietal, intertemporal, supratemporal, tabular and postparietal. The subdivided bones within the skull roof ofDiscosauriscus (and some dissorophoids) are situated at the same places as those found in Devonian rhipidistians, and may relate to the homology of the bones of the cranial exoskeletal roof inDiscosauriscus and in osteolepiforms. It shows that the “orthodox” terminology of the skull roof bones used in osteolepiforms is correct.


Devonian Dorsal View Middle Devonian Posterolateral Corner Lateral Line System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.






ES (corap.)

compound extrascapular

ES. 1

latral extrascapular

ES. m

median extrascapular

ET POSP postsplenial




Fr. m.

median frontal

FR. ml

medial frontal





PA. 1

lateral parietal

PA. m

median parietal

PA. ml

medial parietal













PP. m

median postparietal















TE. p

posterior tectal


Sehr gut erhaltenes Material des unterpermischen TetrapodenDiscosauriscus austriacus (Makowsky 1876) wurde von zwei Lokalitäten in der Boskovice Furche in Mähren (Tschechoslowakei) gewonnen. Eine relativ große Zahl der Individuen hat teilweise oder ganz geteilte oder auch verschmolzene Schädeldachknochen. Solche Teilungen und Verschmelzungen sind bei dieser Art noch nie gefunden worden, und sie betreffen die folgenden Knochen: Frontale, Postfrontale, Parietale, Intertemporale, Supratemporale, Tabulare und Postparietale. Die geteilten Knochen im Schädeldach vonDiscosauriscus (und einigen Dissorophoiden) haben dieselbe relative Position wie bei den devonischen Rhipidistiern, und sie liefern daher Argumente für die Homologisierung der Exocranialknochen zwischenDiscosauriscus und den Osteolepiformes. Es zeigt sich, daß die »orthodoxe Version« der Schädeldachterminologie, die bei den Osteolepiformen verwendet wird, die korrekte ist.


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  1. Beaumont, E. 1977. Cranial morphology of the Loxommatidae (Amphibia: Labyrinthodontia). - Philosophical Transactions of the Royal Society of London B 280: 29–101, London.CrossRefGoogle Scholar
  2. De Beer, G. R. 1937. The development of the vertebrate skull. - 552 pp., Oxford University Press, Oxford.Google Scholar
  3. Bellairs, A. d’A. &Kamal, A. M. 1981. The chondrocranium and the development of the skull in recent reptiles. - [In:]Gans, C. &Parsons, T. C. (eds.) Biology of Reptilia 11: 1–263, Academic Press, London.Google Scholar
  4. Bjerring, H. C. 1972. Morphological observations on the exoskeletal skull roof of an osteolepiform from the Carboniferous of Scotland. - Acta zoologica, Stockholm53: 73–92, Stockholm.CrossRefGoogle Scholar
  5. Borgen, U. J. 1983. Homologizations of skull roofing bones between tetrapods and osteolepiform fishes. - Palaeontology26: 735–753, London.Google Scholar
  6. Boy, J. A. 1972. Die Branchiosaurier (Amphibia) des saarpfälzischen Rotliegenden (Perm, SW-Deutschland). -Abhandlungen des Hessischen Landesamtes für Bodenforschung65: 1–137, Wiesbaden.Google Scholar
  7. — 1978. Die Tetrapodenfauna (Amphibia, Reptilia) des saarpfälzischen Rotliegenden (Unter-Perm; SW-Deutschland). 1.Branchiosaurus. - Mainzer geowissenschaftliche Mitteilungen7: 27–76, Mainz.Google Scholar
  8. — - 1988. Über einige Vertreter der Eryopoidea (Amphibia: Temnospondyli) aus dem europäischen Rotliegend (? höchstes Karbon - Perm). 1.Sclerocephalus. - Paläontologische Zeitschrift62: 107–132, Stuttgart.Google Scholar
  9. Bystrow, A. P. &Efremov, J. A. 1940.Benthosuchus sushkini Efr. - A labyrinthodont from the Eotriassic of Sharjenga River. - Trudy paleontologicheskovo Instituta AN 10: 1–152, Moskow. [In Russian.]Google Scholar
  10. Gardiner, B. G. &Bartram, A. W. H. 1977. The homologies of ventral cranial fissures in osteichthyans. -[In:]Andrews, S. M.;Miles, R. S. &Walker, A. D. (eds.) Problems in Vertebrate Evolution.- Linnean Society Symposium Series: 227–245, Academic Press, London.Google Scholar
  11. Heaton, M. J. 1980. The Cotylosauria: A reconsideration of a group of archaic tetrapods. - [In:]Panchen, A. L. (ed.) The terrestrial environment and the origin of land vertebrates. - Systematic Association Special Volume15: 497–551, Academic Press, London.Google Scholar
  12. Holmes, R. 1984. The Carboniferous amphibianProterogyrinus scheelei Romer, and the early evolution of tetrapods. -Philosophical Transactions of the Royal Society of LondonB 306: 431–524, London.CrossRefGoogle Scholar
  13. Ivakhnenko, M. F. 1987. Permian parareptiles of USSR. - “Nauka”, Trudy paleontologicheskovo Instituta AN223: 1–160, Moskow. [In Russian.]Google Scholar
  14. Jarvik, E. 1944. On the dermal bones, sensory canals and pit-lines of the skull inEustenhopteron foordi Whiteaves, with some remarks onE. säve-söderberghi Jarvik. - Kungliga Svenska Vetenskakade- miens Handlingar (3)21: 1–48, Stockholm.Google Scholar
  15. — 1948. On the morphology and taxonomy of the Middle Devonian osteolepid fishes of Scotland. - Kungliga Svenska Vetenskakademiens Handlingar (3)25: 1–301, Stockholm.Google Scholar
  16. — 1952. On the fish-like tail in the ichthyostegid stegocephalians with descriptions of a new stegocephalian and a new crossopterygian from the Upper Devonian of East Greenland. - Meddelelser om Grønland114: 1–90, Copenhagen.Google Scholar
  17. — 1954. On the visceral skeleton inEusthenopteron with a discussion of the parasphenoid and palatoquadrate in fishes. - Kungliga Svenska Vetenskakademiens Handlingar (4)5: 1–104, Stockholm.Google Scholar
  18. — 1967. The homologies of frontal and parietal bones in fishes and tetrapods. - Colloques internationaux du Centre National de la Recherche Scientifique163: 181–213, Paris.Google Scholar
  19. — 1972. Middle and Upper Devonian Porolepiformes from East Greenland with special references toGlyptolepis groenlandica n. sp. - Meddelelser om Grønland187: 1–195, Copenhagen.Google Scholar
  20. — 1980. Basic structure and evolution of vertebrates. - 2 Volumes, 912 pp., Academic Press, London.Google Scholar
  21. Jessen, H. 1975. A new choanate fish,Powichthys thorsteinssoni n. g., n. sp., from the early Lower Devonian of the Canadian Arctic Archipelago. - Colloques internationaux du Centre National de la Recherche Scientifique218: 213–222, Paris.Google Scholar
  22. Klembara, J. 1991. The cranial anatomy of early ontogenetic stages ofAlligator mississippiensis (Daudin, 1802) and the significance of some of its cranial structures for the evolution of tetrapods. - Palaeontographica A215: 103–171, Stuttgart.Google Scholar
  23. - in press a. The parasphenoid and associated dermal structures of the parabasisphenoid ofAlligator mississippiensis (Daudin, 1802). -Palaeontographica A, Stuttgart.Google Scholar
  24. - in press b. The cranial anatomy ofDiscosauriscus austriacus (Makowsky, 1876) from the Lower Permian of Boskovice Furrow (Czecho-Slovakia). I. Sutures and ornamentation.Google Scholar
  25. - in press c. The first record of pit-lines and foraminal pits in tetrapods and the homologies of skull roof bones in tetrapods and fishes. -Geologica carpathica, Bratislava.Google Scholar
  26. - in press d. The lateral line system ofDiscosauriscus austriacus (Makowsky, 1876) and the homologization of skull roof bones between tetrapods and fishes.Google Scholar
  27. - in press e. Was the Lower Permian tetrapodDiscosauriscus electroreceptive?Google Scholar
  28. Klembara, J. &Jangia, M. in press. Variation inDiscosauriscus austriacus (Makowsky, 1876) from the Lower Permian of the Boskovice Furrow (Czecho-Slovakia). - Zoological Journal of the Linnean Society, London.Google Scholar
  29. Klembara, J. &Meszâros, S. in press. New find ofDiscosauriscus austriacus (makowsky, 1876) from the Lower Permian of the Boskovice Furrow (Czecho-Slovakia). - Geologica carpathica, Bratislava.Google Scholar
  30. Lebedkina, N. S. 1979. The skull evolution of amphibians. - 283 pp., “Nauka”, Akademia Nauk USSR, Moskva. [In Russian.]Google Scholar
  31. Lehman, J.-P. 1961. Les stégocéphales du Trias de Madagascar. - Annales de Paléontologie47: 111–154, Paris.Google Scholar
  32. Long, J. A. 1989. A new rhizodontiform fish from the Early Carboniferous of Victoria, Australia, with remarks on the phylogenetic postition of the group. - Journal of Vertebrate Paleontology9 (4): 1–17, Lawrence.Google Scholar
  33. Makowsky, A. 1876. Über einen neuen Labyrinthodonten “Archegosaurusaustriacus nov. spec”. -Sitzungsberichte der kaiserlichen Akademie der Wissenschaften Wien73: 155–166, Wien.Google Scholar
  34. Örvig, T. 1961. New finds of acanthodians, arthrodires, crossopterygians, ganoids and dipnoans in the Upper Middle Devonian calcareous flags (Oberer Plattenkalk) of the Bergisch Gladbach-Paffrath Trough. 2. - Paläontologische Zeitschrift35: 10–27, Stuttgart.Google Scholar
  35. Panchen, A. L. 1970. Anthracosauria. - [In:]Kuhn, O. (ed.) Encyclopedia of Palaeoherpetology5A: 84 pp., Gustav Fischer, Jena.Google Scholar
  36. Romer, A. S. 1941. Notes on the crossopterygian hyomandibular and braincase. -Journal of Morphology69: 141–160, Philadelphia.CrossRefGoogle Scholar
  37. — 1947. Review of the Labyrinthodontia. - Bulletin of the Museum of Comparative Zoology, Harvard College99: 1–368, Cambridge, Mass.Google Scholar
  38. Säve-SÖderbergh, G. 1933. The dermal bones of the head and the lateral line system inOsteolepis macrolepidotus Ac with remarks on the terminology of the lateral line system and on the dermal bones of certain other crossopterygians. - Nova Acta Regiae Societatis Scientiarum Upsaliensis, sér. 4, 9, No. 2: 1–130, Uppsala.Google Scholar
  39. — 1935. On the dermal bones of the head in Labyrinthodont Stegocephalians and primitive Reptilia with special reference to Eotriassic Stegocephalians from East Greenland. - Meddelelser om Grønland98: 1–211, Copenhagen.Google Scholar
  40. Sawin, H. J. 1941. The cranial anatomy ofEryops megacephalus. - Bulletin of the Museum of Comparative Zoology, Harvard College88: 407–463, Cambridge (Mass.).Google Scholar
  41. Smithson, T. R. 1985. The morphology and relationships of the Carboniferous amphibianEoherpeton watsoni Panchen. -Zoological Journal of the Linnean Society85: 317–410, London.CrossRefGoogle Scholar
  42. Smith-Woodward, A. 1981. Catalogue of the fossil fishes in the British Museum (Natural History). Part III. - 567 pp., London.Google Scholar
  43. Spinar, Z. V. 1952. Revision of some Moravian Discosauriscidae (Labyrinthodontia). - Rozpravy üstredniho üstavu geologického15: 1–115, Prague. [In Czech.]Google Scholar
  44. Vorobyeva, E. 1977. Morphology and nature of evolution of crossopterygian fishes. - Trudy paleontolo- gicheskovo Instituta AN163: 1–239, Moscow. [In Russian.]Google Scholar
  45. Watson, D. M. S. 1926. The evolution and origin of the Amphibia. - Philosophical Transactions of the Royal Society of London B214: 189–257, London.CrossRefGoogle Scholar
  46. Werneburg, R. 1985. Zur Taxonomie der jungpaläozoischen Familie Discosauriscidae Romer 1947 (Batrachosauria, Amphibia). - Freiberger Forschungshefte (C)400: 117–133, Leipzig.Google Scholar
  47. — 1986. Die Stegocephalen (Amphibia) der Goldlauterer Schichten (Unterrotliegendes, Perm) des Thüringer Waldes, Teil I:Apateon flagrifer (Whittard). - Freiberger Forschungshefte (C)410: 88–101, Leipzig.Google Scholar
  48. —ba] 1989. Labyrinthodontier (Amphibia) aus dem Oberkarbon und Unterperm Mitteleuropas - Systematik, Phylogenie und Stratigraphie. - Freiberger Forschungshefte (C)436: 7–57, Leipzig.Google Scholar
  49. Westoll, T. S. 1936. On the structures of the dermal ethmoid shield ofOsteolepis. - Geological Magazine73: 157–171, Cambridge.CrossRefGoogle Scholar
  50. — 1938. Ancestry of tetrapods. - Nature141: 127–128, London.CrossRefGoogle Scholar
  51. — 1943. The origin of tetrapods. - Biological Reviews18: 78–98, London.CrossRefGoogle Scholar
  52. — 1949. On the evolution of the Dipnoi. - [In:]Jepsen, G. L.;Simpson, G. G. &Mayr, E. (eds.) Genetics, paleontology and evolution: 121–184, Princeton University Press, Princeton. Eingang des Manuskriptes am 1. 6. 1992; Annahme der revidierten Fassung durch die Schriftleitung am 18. 8. 1992.Google Scholar

Copyright information

© E. Schweizerbart’sche Verlagsbuchhandlung 1993

Authors and Affiliations

  • Josef Klembara Bratislava
    • 1
  1. 1.Zoological Institute of Comenius UniversityBratislavaSlovakia

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