Skip to main content
Log in

A new species of Laccognathus (Porolepiform Crossopterygii) from the Devonian of Latvia

  • Published:
Paleontological Journal Aims and scope Submit manuscript

Abstract

A new species of the genus Laccognathus, L. grossi sp. nov., from the upper strata of the Gauja Formation of the Main Devonian Field (Lode locality, Latvia) is established. Morphological similarity and differences of the new species from the previously described L. panderi Gross from the lower strata of the Gauja and the Amata Formation of Latvia are discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. P. E. Ahlberg, “Correlation of the M.O.R.S.-U.O.R.S. Vertebrate Faunas of Britain and the Baltic Region,” Ichthyol. Iss., No. 19, 8–9 (1998).

  2. E. B. Daeschler, N. H. Shubin, and F. A. Jenkins, “Laccognathus (Sarcopterygii, Porolepiformes) from the Fran Formation, Nunavut Territory, Canada,” Ichthyol. Iss. Spec. Publ., No. 7, 19 (2003).

  3. 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).

    Google Scholar 

  4. W. Gross, “Die Fische des mittleren Old Red Süd-Livlands,” Geol. Paläontol. Abh., NF 18(2), 123–156 (1930).

    Google Scholar 

  5. W. Gross, “Die Fische des baltischen Devons,” Palaeontographica, Abt. A 79, 1–74 (1933).

    Google Scholar 

  6. W. Gross, “Beitrage zur Osteologie baltisher und rheinisher Devon—Crossopterygier,” Paläontol. Z. 18, 129–155 (1936).

    Google Scholar 

  7. W. Gross, “Über den Unterkiefer einiger devonischer Crossopterygier,” Abh. Preuss. Akad. Wiss. Math.-Naturwiss. K. 7, 1–51 (1941).

    Google Scholar 

  8. W. Gross, “Die Fischfaunen des baltischen Devons und ihre biostratigraphische Bedeutung,” Korrespond. Naturforsch.-Ver. Riga 64, 373–436 (1942).

    Google Scholar 

  9. E. Jarvik, “On the Structure of the Snout of Crossopterygians and Lower Gnathostomes in General,” Zool. Bidr. Uppsala 21, 237–671 (1942).

    Google Scholar 

  10. E. Jarvik, “Middle and Upper Devonian Porolepiformes from East Greenland with Special Reference to Glyptolepis groenlandica n. sp. and a Discussion on the Structure of the Head in the Porolepiformes,” Meddel. Grønland 187(2), 1–307 (1972).

    Google Scholar 

  11. E. Jarvik, Basic Structure and Evolution of Vertebrates (Academic, London-New York, 1980), Vol. 1; Vol. 2.

    Google Scholar 

  12. L. A. Lyarskaya, Placoderms from the Devonian of the Baltic Region: Asterolepididae (Zinatne, Riga, 1981) [in Russian].

    Google Scholar 

  13. E. Mark-Kurik, A. Blieck, S. Loloziak, and A.-M. Candelier, “Miospore Assemblage from the Lode Member (Gauja Formation) in Estonia and the Middle-Upper Devonian Boundary Problem,” Proc. Eston. Acad. Sci. Geol. 48, 86–98 (1999).

    Google Scholar 

  14. E. I. Vorobyeva, “Observation of Two Rhipidistian Fishes from the Upper Devonian of Lode, Latvia,” Zool. J. Linn. Soc. 70, 191–201 (1980).

    Google Scholar 

  15. E. I. Vorobyeva, Problem of the Origin of Terrestrial Vertebrates (Nauka, Moscow, 1992) [in Russian].

    Google Scholar 

  16. E. I. Vorobyeva, “New Data on Laccognathus (Porolepiformes, Crossopterygii) from the Upper Devonian of Latvia,” Ichthyol. Iss. Spec. Publ., No. 7, 52 (2003).

  17. E. I. Vorobyeva, “Class Sarcopteryigii: Subclass Crossopterygii,” in Agnathans and Fishes: Extinct Vertebrates of Russia and Adjacent Countries (GEOS, Moscow, 2004), pp. 272–372 [in Russian].

    Google Scholar 

  18. E. I. Vorobyeva, N. V. Panteleev, O. V. Kolobayeva, and A. Blieck, “Upper Devonian Ichthyofauna from the Michailovskyi Excavation of the Kursk Magnetic Anomaly of Russia,” Modern Geol. 21, 79–86 (1997).

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Original Russian Text © E.I. Vorobyeva, 2006, published in Paleontologicheskii Zhurnal, 2006, No. 3, pp. 76–87.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Vorobyeva, E.I. A new species of Laccognathus (Porolepiform Crossopterygii) from the Devonian of Latvia. Paleontol. J. 40, 312–322 (2006). https://doi.org/10.1134/S0031030106030129

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S0031030106030129

Key words

Navigation