addendum to the article “lageniastrum macrosporae (fossil volvocales, lageniastraceae nov. fam.),...

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Addendum to the article “Lageniastrum macrosporae (fossil Volvocales, Lageniastraceae nov. fam.), an endophyte in megaspores from the Carboniferous of the French Massif Central”. Geobios 38 (2005): 451–465 Michael Krings a,b, *, Anke Grewing c , Thomas N. Taylor b , Hans Kerp c , Jean Galtier d a Bayerische Staatssammlung für Paläontologie und Geologie und GeoBio-Center LMU , Richard-Wagner-Strasse 10, 80333 Munich, Germany b Department of Ecology and Evolutionary Biology, Natural History Museum and Biodiversity Research Center, The University of Kansas, Lawrence, KS 66045-7534, USA c Forschungsstelle für Paläobotanik am Geologisch Paläontologischen Institut und Museum, Westfälische Wilhelms-Universität Münster, Hindenburgplatz 57, 48143 Münster, Germany d Laboratoire de Botanique et Bioinformatique de l’Architecture des Plantes, CIRAD TA40/PS2, 2196, boulevard de la Lironde, 34398 Montpellier cedex 5, France Available online 17 October 2005 This contribution was first published in Geobios 38. We regret that the color plates were not printed at that time, and they are reproduced here with an electronic link to the origi- nal paper. > doi of original article 10.1016/j.geobios.2004.01.006. * Corresponding author. E-mail address: [email protected] (M. Krings). Geobios 38 (2005) e1–e5 doi:10.1016/j.geobios.2005.09.001

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Page 1: Addendum to the article “Lageniastrum macrosporae (fossil Volvocales, Lageniastraceae nov. fam.), an endophyte in megaspores from the Carboniferous of the French Massif Central”

Addendum to the article “Lageniastrum macrosporae(fossil Volvocales, Lageniastraceae nov. fam.), an endophyte

in megaspores from the Carboniferous of the French Massif Central”.Geobios 38 (2005): 451–465

Michael Krings a,b,*, Anke Grewing c, Thomas N. Taylor b, Hans Kerp c, Jean Galtier d

a Bayerische Staatssammlung für Paläontologie und Geologie und GeoBio-Center LMU, Richard-Wagner-Strasse 10, 80333 Munich, Germanyb Department of Ecology and Evolutionary Biology, Natural History Museum and Biodiversity Research Center,

The University of Kansas, Lawrence, KS 66045-7534, USAc Forschungsstelle für Paläobotanik am Geologisch Paläontologischen Institut und Museum, Westfälische

Wilhelms-Universität Münster, Hindenburgplatz 57, 48143 Münster, Germanyd Laboratoire de Botanique et Bioinformatique de l’Architecture des Plantes, CIRAD TA40/PS2, 2196, boulevard de la Lironde,

34398 Montpellier cedex 5, France

Available online 17 October 2005

This contribution was first published in Geobios 38. Weregret that the color plates were not printed at that time, and

they are reproduced here with an electronic link to the origi-nal paper.

> doi of original article 10.1016/j.geobios.2004.01.006.* Corresponding author.

E-mail address: [email protected] (M. Krings).

Geobios 38 (2005) e1–e5

doi:10.1016/j.geobios.2005.09.001

Page 2: Addendum to the article “Lageniastrum macrosporae (fossil Volvocales, Lageniastraceae nov. fam.), an endophyte in megaspores from the Carboniferous of the French Massif Central”

e2 M. Krings et al. / Geobios 38 (2005) e1–e5

Page 3: Addendum to the article “Lageniastrum macrosporae (fossil Volvocales, Lageniastraceae nov. fam.), an endophyte in megaspores from the Carboniferous of the French Massif Central”

Fig. 3. Longitudinal thin-sections of Sublagenicula nuda megaspores containing Lageniastrum macrosporae colonies; specimens from the “collection Roche”at the Muséum d’Histoire Naturelle d’Autun (France); slides without numbers. (1) Late stage 1 colony (planar stage). Bar = 100 µm. (2) Late stage 1 (or earlystage 2) colony [arrows], slightly extending downward along the inner surface of the spore wall. Bar = 100 µm. (3) Detail of Fig. 3 (2), close up on the colonywith a few closely spaced lens-shaped algal cells recognizable [arrows]. Bar = 50 µm. (4) Early stage 2 colony, viewed slightly from above. Bar = 100 µm. (5)Spore with a small stage 1 colony located beneath the subgula; small arrows point toward the membrane that holds the colony together. Bar = 100 µm. (6) Detailof Fig. 3 (5), focusing on the colony. Large arrows indicate the membrane that holds the colony together; small arrows point toward the tips of algal cells thatseem to bear short filamentous structures (possibly rudimentary flagella). Bar = 50 µm. Fig. 3 (5) and 3 (6) originally figured in Grewing et al. (2003: Figs. 1 and 3).Fig. 3. Sections longitudinales (lames minces) de mégaspores S. nuda contenant des colonies de L. macrosporae; spécimens de la collection Roche, Muséumd’Histoire Naturelle d’Autun (France); lames sans numéros. (1) Colonie au stade 1 avancé (stade plan). Échelle = 100 µm. (2) Colonie au stade 1 final (ou débutde stade 2) [flèches], commençant à s’étendre vers le bas le long de la surface interne de la paroi sporale. Échelle = 100 µm. (3) Détail de la Fig. 3 (2) concentrésur la colonie avec quelques cellules algales de forme lenticulaire reconnaissables [flèches]. Échelle = 50 µm. (4) Colonie en début de stade 2, vue légèrementde dessus. Échelle = 100 µm. (5) Spore avec une petite colonie au stade 1 localisée sous la subgula; les petites flèches pointent la membrane qui maintient lacolonie. Échelle = 100 µm. (6) Détail de la colonie de la Fig. 3 (5). La grande flèche indique la membrane qui maintient la colonie; les petites flèches pointentle sommet des cellules algales qui semblent porter des structures filamenteuses courtes (peut-être des flagelles rudimentaires). Échelle = 50 µm. Les Figures 3(5) et 3 (6) ont été illustrées dans Grewing et al. (2003: Figs. 1 and 3).

e3M. Krings et al. / Geobios 38 (2005) e1–e5

Page 4: Addendum to the article “Lageniastrum macrosporae (fossil Volvocales, Lageniastraceae nov. fam.), an endophyte in megaspores from the Carboniferous of the French Massif Central”

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Page 5: Addendum to the article “Lageniastrum macrosporae (fossil Volvocales, Lageniastraceae nov. fam.), an endophyte in megaspores from the Carboniferous of the French Massif Central”

Fig. 4. Longitudinal thin-sections of S. nuda megaspores containing L. macrosporae colonies; specimens from the “collection Roche” at the Muséum d’His-toire Naturelle d’Autun (France); slides without numbers. (1) Paralectotype. Stage 3 colony with prominent protoplasmic strands, interconnecting adjacentcells; originally figured in Grewing et al. (2003: Figs. 4 and 5) Bar = 100 µm. (2, 3) Details of Fig. 4 (1). Bars = 50 µm (2) and 20 µm (3). (4) Stage 2 colony thatextends downward along the inner surface of the spore wall, and, in this way, ultimately assumes three-dimensional organization. Note that protoplasmic strandsare missing in this specimen; originally figured in Grewing et al. (2003: Fig. 2). Bar = 100 µm. (5, 6) Spores containing early stage 2 colonies. Bars = 200 µm.(7, 8) Details of Fig. 4 (5), displaying the typical lens-shaped to pyriform algal cells. In Fig. 4 (7), the membrane that holds the colony together is particularlywell recognizable. Bars = 50 µm (7) and 200 µm (8). (9) Detail of Fig. 4 (6), showing part of the colony with several protoplasmic strands in place. Bar = 50 µm.Fig. 4. Sections longitudinales (lames minces) de mégaspores S. nuda contenant des colonies de L. macrosporae; spécimens de la collection Roche, Muséumd’Histoire Naturelle d’Autun (France); lames sans numéros. (1) Paralectotype. Colonie stade 3 avec des expansions protoplasmiques marquées interconnectantdes cellules adjacentes; figuré originalement dans Grewing et al. (2003: Figs. 4, 5). Échelle = 100 µm. (2, 3) Détails de la Fig. 4 (1). Échelles = 50 µm (2) et20 µm (3). (4) Colonie au stade 2 qui s’étend vers le bas le long de la surface interne de la paroi sporale, et ainsi assume progressivement une organisationtri-dimensionnelle. Noter que les expansions protoplasmiques sont absentes dans ce spécimen ; figuré originalement dans Grewing et al. (2003: Fig. 2).Échelle = 100 µm. (5, 6) Spores contenant des colonies en début de stade 2. Échelles = 200 µm. (7, 8) Détails de Fig. 4 (5), montrant les cellules algales typiquesde forme lenticulaire à pyriforme. Sur le Fig. 4 (7), la membrane qui maintient ensemble les cellules de la colonie est particulièrement bien reconnaissable.Échelles = 50 µm (7) et 200 µm (8). (9) Détail de Fig. 4 (6), montrant une partie de la colonie avec plusieurs expansions protoplasmiques en place. Échelle = 50 µm.

e5M. Krings et al. / Geobios 38 (2005) e1–e5