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Callixylon wendtii sp. nov., a new species of archaeopteridalean progymnosperm from the Late Devonian of Anti-Atlas, Morocco

  • Mélanie Tanrattana (a1) (a2), Brigitte Meyer-Berthaud (a2) and Anne-Laure Decombeix (a2)

Archaeopterid trees were the main components of most Late Devonian forests. Their aerial axes characterised by a eustele with mesarch primary xylem strands, leaf traces departing radially from cauline bundles and secondary xylem tracheids with radial pits arranged in groups, are referred to the genus Callixylon Zalessky. The nineteen species of Callixylon described to date from North America, North Africa, Europe, Xinjiang and several parts of Russia range from the late Givetian to the Mississippian. In this paper, we describe a new species of Callixylon from two specimens collected in the Famennian locality of Mader el Mrakib in eastern Anti-Atlas. Callixylon wendtii sp. nov. is characterised by the presence of sclerotic nests in the pith, a new character for the genus. Its wood shows narrow rays of variable height, with unevenly distributed ray tracheids. Small vascular traces crossing the wood within the two innermost growth rings are interpreted as evidence for short-lived leaves. This discovery adds to the diversity of the genus Callixylon in an area of northern Gondwana that may have been favourable to the establishment of a diverse community of archaeopterid trees.

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Anderson, H. M., Hiller, N. & Gess, R. W. 1995. Archaeopteris (Progymnospermopsida) from the Devonian of southern Africa. Botanical Journal of the Linnean Society 117, 305–20.
Andrews, H. N., Phillips, T. L. & Radforth, N. W. 1965. Paleobotanical studies in Arctic Canada. I. Archaeopteris from Ellesmere Island. Canadian Journal of Botany 43, 545–56.
Arnold, C. A. 1930. The genus Callixylon from the Upper Devonian of central and western New York. Papers of the Michigan Academy of Science, Arts and Letters XI, 150.
Arnold, C. A. 1931. On Callixylon newberryi (Dawson) Elkins et Wieland. Contributions from the Museum of Paleontology University of Michigan 3, 207–32.
Arnold, C. A. 1934. Callixylon whiteanum sp. nov., from the Woodford chert of Oklahoma. Botanical Gazette 96, 180–85.
Beck, C. B. 1953. A new root species of Callixylon. American Journal of Botany 40, 226–33.
Beck, C. B. 1960. Connection between Archaeopteris and Callixylon. Science 131, 1524–25.
Beck, C. B. 1962. Reconstruction of Archaeopteris and further consideration of its phylogenetic position. American Journal of Botany 49, 373–82.
Beck, C. B. 1964. Predominance of Archaeopteris in Upper Devonian flora of western Catskills and adjacent Pennsylvania. Botanical Gazette 125, 126–28.
Beck, C. B., Coy, K. & Schmid, R. 1982. Observations on the fine structure of Callixylon wood. American Journal of Botany 69, 5476.
Beck, C. B. & Wight, D. C. 1988. Progymnosperms. In Beck, C. B. (ed.) Origin and evolution of gymnosperms, 184. New York: Columbia University Press. 504 pp.
Berry, C. M., Morel, E., Mojica, J. & Villarroel, C. 2000. Devonian plants from Colombia, with discussion of their geological and palaeogeographical context. Geological Magazine 137, 257–68.
Cai, C.-Y. 1989. Two Callixylon species from Upper Devonian of Junggar Basin, Xinjiang. Acta Palaeontologica Sinica 28, 571–78.
Chitaley, S. 1988. The wood Callixylon from the Late Devonian of Ohio, USA. Review of Palaeobotany and Palynology 53, 349357.
Chitaley, S. & Cai, C. 2001. Permineralized Callixylon woods from the Late Devonian Cleveland Shale of Ohio, USA and that of Kettle Point, Ontario, Canada. Review of Palaeobotany and Palynology 114, 127–44.
Cornet, L., Gerrienne, P., Meyer-Berthaud, B. & Prestianni, C. 2012. A Middle Devonian Callixylon (Archaeopteridales) from Ronquières, Belgium. Review of Palaeobotany and Palynology 183, 18.
Cribbs, J. E. 1939. Cauloxylon ambiguum, gen. et sp. nov., a new fossil plant from the Reed Springs Formation of southwestern Missouri. American Journal of Botany 26, 440–49.
Dawson, J. W. 1871. The fossil plants of the Devonian and Upper Silurian formations of Canada. Geological Survey of Canada, Montreal 1, 192.
Decombeix, A.-L., Meyer-Berthaud, B. & Galtier, J. 2007. A review of the genus Eristophyton, with special focus on the Mississippian species. Comptes Rendus Palevol 6, 393401.
Decombeix, A.-L. & Galtier, J. 2017. Ahnetia, a new lignophyte stem from the Lower Carboniferous of southern Algeria. Review of Palaeobotany and Palynology 237, 6274.
Decombeix, A.-L. & Meyer-Berthaud, B. 2013. A Callixylon (Archaeopteridales, Progymnospermopsida) trunk with preserved secondary phloem from the Late Devonian of Morocco. American Journal of Botany 100, 2219–30.
DiMichele, W. A. & Hook, R. W. 1992. Paleozoic terrestrial ecosystems. In Behrensmeyer, A. K., Damuth, J. D., DiMichele, W. A., Potts, R., Sues, H.-D. & Wing, S. L. (eds) Terrestrial ecosystems through time. Evolutionary palaeoecology of terrestrial plants and animals, 205325. Chicago: The University of Chicago Press. 578 pp.
Doubinger, J. & Marguerier, J. 1975. Paléoxylologie: étude anatomique comparée de Scleromedulloxylon aveyronense nov. gen. nov. sp. du Permien de St-Affrique (Aveyron, France); considérations taxinomiques et stratigraphiques. Geobios 8, 2559.
Dun, W. S. 1897. On the occurrence of Devonian plant bearing beds on the Genoa River, Co. of Auckland. Records of the Geological Survey of New South Wales 5, 117–23.
Elkins, M. G. & Wieland, G. R. 1914. Cordaitean wood from the Indiana Black Shale. American Journal of Science – Fourth Series 38, 6578.
Falcon-Lang, H. J., Kurzawe, F. & Lucas, S .G. 2014. Coniferopsid tree trunks preserved in sabkha facies in the Permian (Sakmarian) Community Pit Formation in south-central New Mexico, USA: Systematics and palaeoecology. Review of Palaeobotany and Palynology 200, 138–60.
Galtier, J., Paris, F. & El Aouad-Debbaj, Z. 1996. La présence de Callixylon dans le Dévonien supérieur du Maroc et sa signification paléogéographique. Comptes Rendus de l'Académie des Sciences Paris, Série IIa 322, 893900.
Hammond, S. E. 2004. Progymnosperms and the origin of the seed. PhD Thesis, Cardiff University, UK. 300 pp.
Hernandez-Castillo, G. R., Stockey, R. A., Rothwell, G. W. & Mapes, G. 2009. Reconstruction of the Pennsylvanian-age walchian conifer Emporia cryptica sp. nov. (Emporiaceae: Voltziales). Review of Palaeobotany and Palynology 157, 218–37.
Hoskins, J. H. & Cross, A. T. 1951. The structure and classification of four plants from the New Albany Shale. American Midland Naturalist 46, 684716.
Hylander, C. J. 1922. A mid-Devonian Callixylon. American Journal of Science 204, 315–21.
Iurina, A. L. & Lemoigne, Y. 1972. Palaeoxylon kazakstanensis: nouvelle structure ligneuse de type araucarien, du Dévonien Supérieur du Kazakstan central (URSS). Comptes Rendus de l'Académie des Sciences Paris, Série D 274, 814–17.
Iurina, A. & Lemoigne, Y. 1979. Sur la présence du Callixylon newberryi (Dawson) Elkins et Wieland 1814, en Kazakhstan (URSS) au Dévonien supérieur. Palaeontographica B 170, 19.
Kräusel, R., Maithy, P. K. & Maheshwari, H. K. 1962. Gymnospermous woods with primary structures from Gondwana rocks – a review. The Palaeobotanist 10, 97107.
Kräusel, R. & Weyland, H. 1929. Beiträge zur Kenntnis der Devonflora, III. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft 41, 315–60.
Kräusel, R. & Weyland, H. 1937. Pflanzenreste aus dem Devon. X. Zwei Pflanzenfunde im Oberdevon der Eifel. Senckenbergiana 19, 338–55.
Kurzawe, F., Iannuzzi, R., Merlotti, S. & Rohn, R. 2013. New gymnospermous woods from the Permian of the Parnaíba Basin, Northeastern Brazil, Part II: Damudoxylon, Kaokoxylon and Taeniopitys. Review of Palaeobotany and Palynology 195, 5064.
Lemoigne, Y., Iurina, A. & Snigirevskaya, N. 1983. Révision du genre Callixylon Zalessky 1911 (Archaeopteris) du Dévonien. Palaeontographica B 186, 81120.
Lepekhina, V. G. 1963. New finds of cordaitean woods from upper Palaeozoic of Kazakhstan. Journal of Palaeontology 4, 101–09.
Maheshwari, H. K. 1972. Permian wood from Antarctica and revision of some Lower Gondwana wood taxa. Palaeontographica B 138, 143.
Marcelle, H. 1951. Callixylon velinense nov. sp. Un bois à structure conservée du Dévonien de Belgique. Bulletin de l'Académie Royale de Belgique, Sciences 37, 908–19.
Matten, L. C. 1972. Callixylon from the Maury Formation (Lower Mississipian) of Tennessee. Journal of Paleontology 46, 711–13.
Matten, L. C. & Trimble, L. J. 1979. Petrified plants from the Maury Formation (Tournaisian) of Central Tennessee. In Geldsetzer, H. H. J., Nassichuk, W. W., Belt, E. S. & Macqueen, R. W. (eds) Ninth International Congress on the Carboniferous Stratigraphy and Geology, Proceedings volume 3, 8394. Carbondale, IL: Southern Illinois University Press.
Merlotti, S. 1998. Mussaeoxylon, novo táxon gimnospérmico do Gondvana brasileiro. Acta Geológica Leopoldensia 21, 4554.
Merlotti, S. 2002. Dois novos taxa lenhosos da Formação Serra Alta (Permiano Superior, Bacia do Paraná), Estado do Rio Grande do Sul, Brasil. Geosciencias 7, 514.
Merlotti, S. & Kurzawe, F. 2011. Lenhos permianos da Bacia do Paraná, Brasil: síntese e revisão taxonômica. GAEA Journal of Geoscience 71, 1933.
Meyer-Berthaud, B., Wendt, J. & Galtier, J. 1997. First record of a large Callixylon trunk from the Late Devonian of Gondwana. Geological Magazine 134, 847–53.
Meyer-Berthaud, B., Scheckler, S. E. & Bousquet, J.-L. 2000. The development of Archaeopteris: new evolutionary characters from the structural analysis of an Early Famennian trunk from southeast Morocco. American Journal of Botany 87, 456–68.
Meyer-Berthaud, B., Rücklin, M., Soria, A., Belka, Z. & Lardeux, H. 2004. Frasnian plants from the Dra Valley, southern Anti-Atlas, Morocco. Geological Magazine 141, 675–86.
Meyer-Berthaud, B., Soria, A. & Decombeix, A.-L. 2010. The land plant cover in the Devonian: a reassessment of the evolution of the tree habit. In Vecoli, M., Clément, G. & Meyer-Berthaud, B. (eds) The terrestrialization process: modelling complex interactions at the biosphere-geosphere interface. Geological Society, London, Special Publications 339, 5970. London & Bath: The Geological Society. 187 pp.
Meyer-Berthaud, B., Decombeix, A.-L. & Ermacora, X. 2013. Archaeopterid root anatomy and architecture: New information from permineralized specimens of Famennian age from Anti-Atlas (Morocco). International Journal of Plant Sciences 174, 364–81.
Moreno-Sanchez, M. 2004. Devonian plants from Colombia: geologic framework and paleogeographic implications. PhD Thesis, Université de Liège, Belgium. 108 pp.
Orlova, O. A., Jurina, A. L. & Gordenko, N. V. 2011. First finding of Archaeopteridaceae wood in the Upper Devonian deposits of the Middle Timan Region. Moscow University Geology Bulletin 66, 341–47.
Orlova, O. A. & Jurina, A. 2011. Genus Callixylon Zalessky (Archaeopteridophyta): main criteria for distinguishing its species and revision of its species composition. Paleontological Journal 45, 580–89.
Penhallow, D. P. 1900. Notes on American species of Dadoxylon. Transactions of the Royal Society of Canada 6, 5197.
Read, C. B. 1936. A Devonian flora from Kentucky. Journal of Paleontology 10, 215–27.
Read, C. B. & Campbell, G. 1939. Preliminary account of the New Albany Shale Flora. The American Midland Naturalist 21, 435–53.
Rothwell, G. W., Mapes, G. & Hernandez-Castillo, G. R. 2005. Reconstructing Hanskerpia gen. nov. and phylogenetic relationships among the most ancient conifers (Voltziales) Taxon 54, 733–50.
Rothwell, G. W. & Mapes, G. 2001. Barthelia furcata gen. et sp. nov., with a review of Paleozoic coniferophytes and a discussion of coniferophyte systematics. International Journal of Plant Sciences 162, 637–67.
Scheckler, S. E. 1986. Geology, floristics and paleoecology of Late Devonian coal swamps from Appalachian Laurentia (U.S.A.). Annales de la Société Géologique de Belgique 109, 209–22.
Schmalhausen, J. 1894. Über Devonische Pflanzen aus den Donetz-Becken. Mémoire du Comité Géologique de Saint Petersbourg 8, 136.
Schneider, C. A.Rasband, W. S. & Eliceiri, K. W. 2012. NIH Image to ImageJ: 25 years of image analysis. Nature Methods 9(7), 671675. PMID 22930834.
Snigirevskaya, N. S. & Lemoigne, Y. 1990. Nouveau gisement Dévonien à Callixylon dans le centre de la Sibérie: conséquences pour la phytogéographie, la climatologie et les relations continentales au Dévonien Supérieur. Comptes Rendus de l'Académie des Sciences Paris, Série II 311, 1557–62.
Snigirevskaya, N. S. & Snigirevsky, S. M. 2001. New locality of Callixylon (Archaeopteridaceae) in the Late Devonian of Andoma Mountain (Vologda Region, north-west Russia) and its importance for the reconstruction of archaeopterid distribution. Acta Palaeobotanica 41, 97105.
Soria, A., Meyer-Berthaud, B. & Scheckler, S. E. 2001. Reconstructing the architecture and growth habit of Pietzchia levis sp. nov. (Cladoxylopsida) from the Late Devonian of southeastern Morocco. International Journal of Plant Sciences 162, 911–26.
Soria, A. & Meyer-Berthaud, B. 2004. Tree fern growth strategy in the Late Devonian cladoxylopsid species Pietzchia levis from the study of its stem and root system. American Journal of Botany 91, 1023.
Taylor, T. N., Taylor, E. L. & Krings, M. 2009. Paleobotany. The Biology and Evolution of Fossil Plants. Second Edition. Amsterdam: Academic Press. 1252 pp.
Trivett, M. L. 1993. An architectural analysis of Archaeopteris, a fossil tree with pseudomonopodial and opportunistic adventitious growth. Botanical Journal of the Linnean Society 111, 301–29.
White, D. 1988. Flora fossil das Coal Measures do Brasil. In Ulbrich, H. & Rocha Campos, A. C. (eds) Proceedings of Seventh International Gondwana Symposium (Sao Paulo, Brazil), 341617. São Paulo: Instituto de Geociências-USP. xvi+714 pp.
Zalessky, M. D. 1909. Communication préliminaire sur un nouveau Dadoxylonà faisceaux de bois primaire autour de la moëlle, provenant du Dévonien supérieur du bassin du Donetz. Bulletin de l'Académie des Sciences de Saint Petersbourg, IV série 18, 1175–78.
Zalessky, M. D. 1911. Etude sur l'anatomie du Dadoxylon tchihatcheffi Goeppert. Mémoire du Comité Géologique de Russie, N. S. 68, 129.
Zimmermann, W. 1930. Die Phylogenie des Pflanzen. Jena: Gustav Fischer.
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