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doc. RNDr. Jakub Sakala, Ph.D.


Phone: +420 221951461
Office: P16 A
E-mail: radenatur.cuni.cz

ORCID 0000-0001-8922-0832
Researcher ID P-7744-2017
Scopus ID 6603449601

Professional Experience

Associate Professor, Charles University
Assistant Lecturer, Charles University 2003–2016


PhD, Charles University, Prague & Université Pierre-et-Marie Curie, Paris
D.E.A.(=MSc) Palaeontology, Université Pierre-et-Marie Curie, Paris & Université Montpellier II 1997–1998
Mgr (=MSc) Palaeobotany, Charles University 1992–1997

Research Interests

  • Fossil wood
  • Tertiary palaeobotany
  • Whole-Plant concept


  • Systematic palaeobotany
  • General palaeontology
  • Palaeoxylotomy


peer-reviewed articles :

  1. Sakala, J., Privé-Gill, C. and Koeniguer, J.-C. (1999): Silicified Angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France): the problem of root wood. Comptes rendus de l’Académie des sciences - Série IIa - Sciences de la terre et des planètes 328, 553–557.
  2. Kvaček, Z. and Sakala, J. (1999): Twig with attached leaves, fruits and seeds of Decodon (Lythraceae) from the Lower Miocene of northern Bohemia, and implications for the identification of detached leaves and seeds. Review of Palaeobotany and Palynology 107, 201–222.
  3. Sakala, J. (2000a): Flora and vegetation of the roof of the main lignite seam in the Bílina Mine (Most Basin, Lower Miocene). Acta Musei Nationalis Pragae, Series B, Historia Naturalis 56, 49–84.
  4. Sakala, J. (2000b): Silicified angiosperm wood from the Dangu locality (Ypresian of the Gisors region, Eure, France) – final part: the problem of palaeoclimate reconstruction based on fossil wood. Geodiversitas 22, 493–507. (better version of the figures at the end !!)
  5. Sakala, J. and Teodoridis, V. (2001): Fossil wood and foliage of Castanea (Fagaceae) from the Upper Oligocene of northern Bohemia. Bulletin of the Czech Geological Survey 76, 23–28.
  6. Sakala, J. (2002): First record of fossil angiosperm wood (Ulmoxylon, Ulmaceae) from the famous locality of Bílina (Czech Republic, Early Miocene). Comptes Rendus Palevol 1, 161–166.
  7. Sakala, J. (2003): Podocarpoxylon helmstedtianum Gottwald from Kučlín (Late Eocene, Czech Republic) reinterpreted as Tetraclinoxylon vulcanense Privé. Feddes Repertorium 114, 25–29.
  8. Žák, K., Teodoridis, V. and Sakala, J. (2003): Find of flora in Tertiary sediments near Karlštejn. Geoscience Research Reports for 2002, 47–49. (in Czech with English abstract)
  9. Sakala, J. and Privé-Gill, C. (2004): Oligocene angiosperm woods from northwestern Bohemia, Czech Republic. IAWA Journal 25, 369–380.
  10. Sakala, J., Košťák M., Mazuch, M. and Štěpánková, J. (2006): Dendrological characteristics of subrecent fossil plant remains from the Uzon Caldera in Kamchatka (eastern Russia). Acta Universitatis Carolinae, Geologica 47, 125–128.
  11. Sakala, J. (2007): The potential of the fossil angiosperm wood to reconstruct the palaeoclimate in the Tertiary of Central Europe (Czech Republic, Germany). Acta Palaeobotanica 47, 127–133.
  12. Dupéron, J., Dupéron-Laudoueneix, M., Sakala, J. and De Franceschi, D. (2008): Ulminium diluviale Unger : historique de la découverte et nouvelle étude (Ulminium diluviale Unger: Historical data on the discovery and new study). Annales de Paléontologie 94, 1–12.
  13. Teodoridis, V. and Sakala, J. (2008): Early Miocene conifer macrofossils from the Most Basin (Czech Republic). Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 250, 287–312.
  14. Mencl, V., Matysová, P. and Sakala, J. (2009): Silicified wood in Czech part of the Intrasudetic Basin (Late Pennsylvanian, Bohemian Massif, Czech Republic. Neues Jahrbuch für Geologie und Paläontologie – Abhandlungen 252, 269–288.
  15. Gryc, V., Vavrčík, H. and Sakala, J. (2009): Cenomanian angiosperm wood from the Bohemian Cretaceous Basin, Czech Republic. IAWA Journal 30, 319–329.
  16. Sakala, J., Mencl, V. and Matysová, P. (2009): New data on Upper Carboniferous silicified stems of calamites from the Nová Paka region. Geoscience Research Reports for 2008, 111–113. (in Czech with English abstract)
  17. Matysová, P., Rössler, R., Götze, J., Leichmann, J., Forbes, G., Taylor, E.L., Sakala, J. and Grygar, T. (2010): Alluvial and volcanic pathways to silicified plant stems (Upper Carboniferous–Triassic) and their taphonomic and palaeoenvironmental meaning. Palaeogeography, Palaeoclimatology, Palaeoecology 292, 127–143.
  18. Gryc, V. and Sakala, J. (2010): Identification of fossil trunks from Bükkábrány newly installed in the Visitor Centre of the Ipolytarnóc Fossils Nature Reserve (Novohrad – Nógrád Geopark) in Northern Hungary. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 58, 117–122.
  19. Sakala, J., Rapprich, V. and Pécskay, Z. (2010): Fossil angiosperm wood and its host deposits from the periphery of a dominantly effusive ancient volcano (Doupovské hory Volcanic Complex, Oligocene-Lower Miocene, Czech Republic): systematics, volcanology, geochronology and taphonomy. Bulletin of Geosciences 85, 617–629.
  20. Sakala, J. and Gryc, V. (2011): A new species of Rhysocaryoxylon (Juglandaceae) from the Lower Eocene Fur Formation of Mors island (northwest Jutland, Denmark). Bulletin of the Geological Society of Denmark 59, 45–49.
  21. Továrková, I., Gryc, V. and Sakala, J. (2011): First anatomically characterized wood from the Tertiary of Moravia: Spiroplatanoxylon from the area of Austerlitz (Southern Moravia, Czech Republic). Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 59, 367–372.
  22. Sakala, J. (2011): Silicified stem from the Late Eocene fossil locality of Kučlín (Czech Republic): overview and new remarks. Acta Musei Nationalis Pragae, Series B, Historia Naturalis 67, 145–148.
  23. Kvaček, J. and Sakala, J. (2012): Late Cretaceous flora of James Ross Island (Antarctica) –preliminary report. Czech Polar Reports 1 (2011), 96–103.
  24. Havelcová, M., Sýkorová, I., Bechtel, A., Mach, K., Trejtnarová, H., Žaloudková, M., Matysová, P., Blažek, J., Boudová, J. and Sakala, J. (2013): “Stump Horizon” in the Bílina Mine (Most Basin, Czech Republic) — GC–MS, optical and electron microscopy in identification of wood biological origin. International Journal of Coal Geology 107, 62–77.
  25. Mencl, V., Holeček, J., Rößler, R. and Sakala, J. (2013): First anatomical description of silicified calamitalean stems from the upper Carboniferous of the Bohemian Massif (Nová Paka and Rakovník areas, Czech Republic). Review of Palaeobotany and Palynology 197, 70–77.
  26. Mencl, V., Bureš, J. and Sakala, J. (2013): Summary of occurrence and taxonomy of silicified Agathoxylon-type of wood in late Paleozoic basins of the Czech Republic. Folia Musei rerum naturalium Bohemiae occidentalis. Geologica et Paleobiologica 47, 14–26.
  27. Rößler, R., Philippe, M., van Konijnenburg-van Cittert, J. H. A., McLoughlin, S., Sakala, J., Zijlstra, G. & al. (2014): Which name(s) should be used for Araucaria-like fossil wood? Results of a poll. Taxon 63, 177–184.
  28. Sakala, J. and Vodrážka, R. (2014): A new species of Antarctoxylon: a contribution to the early angiosperm ecosystem of Antarctica during the late Cretaceous. Antarctic Science 26, 371–376.
  29. Svoboda, P. and Sakala, J. (2014): Cenomanian profile in the locality Motyčín in Kladno (Central Bohemia) and its importance for correlation of the Korycany Member. Geoscience Research Reports for 2013, 32–33. (in Czech with English abstract)
  30. Koutecký, V. and Sakala, J. (2015): New fossil woods from the Paleogene of Doupovské hory and České středohoří Mts. (Bohemian Massif, Czech Republic). Acta Musei Nationalis Pragae, Series B, Historia Naturalis 71, 377–398.
  31. Mantzouka, D., Karakitsios, V., Sakala, J. and Wheeler, E. A. (2016): Using idioblasts to group Laurinoxylon species: case study from the Oligo-Miocene of Europe. IAWA Journal 37, 459–488.
  32. Mantzouka, D., Karakitsios, V. and Sakala, J. (2017): Cedroxylon lesbium (Unger) Kraus from the Petrified Forest of Lesbos, lower Miocene of Greece and its possible relationship to Cedrus. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 284, 75–87.
  33. Teodoridis, V., Kvaček, Z., Mach, K., Sakala, J., Dašková, J. and Rojík, P. (2017): Fossil Comptonia difformis (Sternberg) Berry (Myricaceae) from the type area in North Bohemia with comments on foliage anatomy and associated fruits. Bulletin of Geosciences 92, 185–210.
  34. Svoboda, P. and Sakala J. (2017): Nové poznatky o vývoji svrchního cenomanu v Lobči u Kralup nad Vltavou. Geoscience Research Reports 50, 285–287. (in Czech with English abstract)
  35. Sakala, J., Selmeczi, I. and Hably, L. (2018): Reappraisal of Greguss’ fossil wood types and figured specimens from the Cenozoic of Hungary: overview, corrected geology and systematical notes. Fossil Imprint 74, 101–114.
  36. Kraft, P., Pšenička, J., Sakala, J. and Frýda, J. (2019): Initial plant diversification and dispersal event in upper Silurian of the Prague Basin. Palaeogeography, Palaeoclimatology, Palaeoecology 514, 144–155.
  37. Mantzouka, D., Sakala, J., Kvaček, Z., Koskeridou, E. and Ioakim Chr. (2019): Two fossil conifer species from the Neogene of Alonissos Island (Iliodroma, Greece). Geodiversitas 41, 125–142.
  38. Akkemik, Ü., Yıldırım, D. K., Sakala, J., Akkılıç, H. and Altınışık, A. (2019): New petrified wood descriptions from west-central Anatolia: contribution to the composition of the Neogene forest of Turkey. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 292, 57–71.
  39. Grímsson, F., Graham, S. A., Coiro, M., Jacobs, B. F., Xafis, A., Neumann, F. H., Scott, L., Sakala, J., Currano, E. D. and Zetter, R. (2019): Origin and divergence of Afro-Indian Picrodendraceae: linking pollen morphology, dispersal modes, fossil records, molecular dating and paleogeography. Grana 58, 227–275.
  40. Koutecký, V., Teodoridis, V., Čáp, P., Mantzouka, D. and Sakala, J. (2019): Fossil wood from the Doupovské hory and České středohoří volcanic complexes: latest overview and new angiosperms from the locality Dvérce. Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 293, 283–306.
  41. Greguš, J., Kvaček, J. and Sakala, J. (2020): Charcoalified homoxylous woods from the Cenomanian of the Bohemian Cretaceous Basin (Czech Republic). Review of Palaeobotany and Palynology 282, 104311.
  42. Mysliveček, J., Koutecký, V., Rapprich, V., Sakala, J., Pour, O. and Laufek, F. (2021): Zeolites-permineralized fossil-woods from Soutěsky near Děčín lahar. Geoscience Research Reports 54, 77–85. (in Czech with English abstract)
  43. Chernomorets, O. and Sakala, J. (2021): Mixoxylon australe gen. et sp. nov., a unique homoxylous wood with non-angiosperm affinity from the Lower Cretaceous of Antarctica (Albian, James Ross Island). Antarctic Science 33, 493–501.
  44. Pšenička, J., Sakala, J. and Dašková, J. (2022): Odontosoria marekgaltieri sp. nov. (Lindsaeaceae), a new fern from the early Miocene of the Czech Republic: first evidence of the genus in the fossil record. Review of Palaeobotany and Palynology 297, 104580.
  45. Uhlířová, M., Pšenička, J., Sakala, J. and Bek, J. (2022): A study of the large Silurian land plant Tichavekia grandis Pšenička et al. from the Požáry Formation (Czech Republic). Review of Palaeobotany and Palynology 298, 104587.
  46. Koutecký, V., Sakala, J. and Chytrý, V. (2023): Paradiospyroxylon kvacekii gen. et sp. nov. from the Paleogene of the Czech Republic: a case study of individual variability and its significance for fossil wood systematics. Historical Biology 35, 1186–1196.
  47. Venclová, S., Chernomorets, O., Laurin, J., Kvaček, J. and Sakala, J. (2023):  Largest fossil logs of Paraphyllanthoxylon-type from the Eastern Hemisphere (Upper Cretaceous, Czech Republic). Cretaceous Research 147, 105506.
  48. De Schutter, P. J., Everaert, S., Gale, A., Van Remoortel, W., De Borger, G., Sakala, J., Koutecký, V. and Hoedemakers, K. (2023): An exceptional concentration of marine fossils associated with wood-fall in the Terhagen Member (Boom Formation; Schelle, Belgium), Rupelian of the southern North Sea Basin. Geologica Belgica 26, 41–78.
  49. Rapprich, V., Čáp, P., Erban Kochergina, Y. V., Kadlecová, E., Benkó, Z., Sakala, J., Rodovská, Z., Matějů, J. and Petrash, D. A. (2023): Interactions between distal epiclastic and bio-chemogenic sedimentation at the foothills of a mafic alkaline volcano: The case of the Oligocene Doupovské Hory Volcanic Complex (Czech Republic). Depositional Record 9, 871–894.
  50. Mysliveček, J., Koutecký, V., Rapprich, V., Sakala, J., Hora, J. M., Laufek, F., Pour, O., Benkó, Z. and Magna, T. (2023): Zeolitized fossil woods from alkaline volcaniclastic rocks: Unravelling an uncommon mineralization process. Geochemistry 83, 126023.
  51. Uhlířová, M., Pšenička, J. and Sakala, J. (2024): New early land plant Capesporangites petrkraftii gen. et sp. nov. from the Silurian, Prague Basin, Czech Republic. Review of Palaeobotany and Palynology 322, 105048.
  52. Bek, J., Uhlířová, M., Pšenička, J. and Sakala, J. (2024): Preliminary results on reproductive organs and in situ spores of an early land plant Tichavekia grandis Pšenička et al. from Přídolí (upper Silurian) of the Prague Basin, Czech Republic. Palaeoworld 33, 299–306.
  53. Koutecký, V., Mysliveček, J., Rapprich, V., Laufek, F., Benkó, Z. and Sakala, J. (2024): First evidence of Pinaceae and Fagaceae in the fossil wood record of the České středohoří Mts. (Czech Republic): A comprehensive study of fossiliferous sites in pyroclastic rocks surrounding the late Oligocene Milá stratovolcano. Review of Palaeobotany and Palynology 325, 105097.

proceedings papers :

  1. Mantzouka, D., Sakala, J., Kvaček, Z. and Karakitsios, V. (2013): Palaeobotanical study of Polichnitos region, southern part of Lesbos Island, Greece (preliminary results on angiosperm wood). Bulletin of the Geological Society of Greece 47, 204–215 (Proceedings of the 13th International Congress, Chania, Sept. 2013).
  2. Mantzouka, D., Sakala, J., Kvaček, Z., Koskeridou, E. and Karakitsios, V. (2019): Petrified Forest of Lesbos Island (Greece): A Palaeobotanical Puzzle of a Unique Geopark and the New Discoveries. IOP Conference Series: Earth and Environmental Science 221, 012146.

Jakub Sakala on ResearchGate.


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