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49 results for “Graptolithina”
FIGURE 3. Gothograptus auriculatus n in Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Baltica), Poland and Lithuania
FIGURE 3. Gothograptus auriculatus n. sp., fragments of distal parts of tubaria showing a thick nema, Bartoszyce IG-1, depth 1647.2 m, praedeubeli Biozone, Poland. A–B, distal end of tubarium with broken appendix, ZPAL G.55/4, A, fragment with beginning of appendix, B, enlargement of last thecal region showing thick nema. C, lateral view of fragment of medial part of tubarium, ZPAL G.55/5.
FIGURE 22. A–F in Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Baltica), Poland and Lithuania
FIGURE 22. A–F. mature tubarium of Gothograptus velo n. sp., holotype, Zawada 1 core, depth 1533.3–1540.0 m, upper part of lundgreni Biozone, Poland, ZPAL G.XIII/35, specimen with nine pairs of thecae. A. lateral-ventral view of specimen; B. enlargement of distal part of tubarium; C. enlargement of proximal end; D. view of outer ancora from outside; E–F. enlargements of th71. Abbreviations: anc.—ancora, lat. ap.—lateral apertural, v.—ventral, th—theca.
FIGURE 6 in Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Baltica), Poland and Lithuania
FIGURE 6. Internal view of the structural features of the thecal framework of Gothograptus. A. Pleural list and socket, ZPAL G.55/40; B. View looking distally of lateral apertural rod curving distally into ventral lip, ZPAL G.55/41; C, E, nema with connecting rod, ZPAL G.55/41, ZPAL G.55/37; D, G. pleural list at side of thecal orifice, ZPAL G.55/42, ZPAL G.55/41. F. midventral list with traces of zigzag fusellar suture, their courses shown by the white bars. ZPAL G.55/43. A–E, G. Mulde Marl, Blåhäll, Gotland, Sweden Locality 813-832, Blåhäll 1 (Spjeldnaes 1984). F. Mulde Marl, Dapps 2, Gotland, Sweden (Calner & Jeppsson 2003). H. internal diagrammatic representation of the lists. The seams are coloured brown.
Fig. 1 in Agastograptus, a synonym of Plectograptus (Retiolitidae, Graptolithina)
Fig. 1. Phylogenetic relationships among the retiolitids (modified after Kozłowska−Dawidziuk 2001) with synapomorphies, and pictures of species originally included in the genus Agastograptus Obut and Zaslavskaya, 1983, showing their position in the Plectograptus, Spinograptus, Gothograptus, and Cometograptus lineages. Graptolite zonation after Koren' et al. 1995.
FIGURE 4 in Four new species and a ribosomal phylogeny of Rhabdopleura (Hemichordata: Graptolithina) from New Zealand, with a review and key to all described extant taxa
FIGURE 4. Original illustrations of described species of Rhabdopleura characterized by indirect inception of ringed erect tubes from creeping tubes via an intervening adnate portion that comprises a blind-ending branch. A, Rhabdopleura normani (from Allman 1869, pl. 8, fig. 1). Note that most of the colony is adherent; only the ringed tubes (rt) are erect, the proximal part of each side branch (ppsb) is adherent and the oblique sutures are not shown. B, schematic interpretative depiction of R. normani (after Andres 1977). C, D, Rhabdopleura grimaldii (from Jullien 1890, p. 181); note that ringed erect tubes (rt) are mostly lacking, with only the adherent proximal parts of side branches (ppsb) present. D is a cropped part of C to show the proximal parts of two side branches, with fusellar sutures and Jullien's putative 'very fine tubes' (vft)—actually the side walls of the tapering pectocaulus, the proximal end of which is transparent, hence the apparent gap between it and the pectocaulus of the creeping tube. E, F, Rhabdopleura striata (from Schepotieff 1909, pl. 7, figs 2, 7); E shows longitudinally striated erect parts of side branches; oblique sutures on prostrate parts omitted in E but shown in F, with characteristic web of fusellar sutures (wfs) in branch angles from main creeping tube. G, Rhabdopleura manubialis (from Jullien & Calvet, 1903, pl. 1, fig. 2) with dormant bodies (db).
FIGURE 9. Rhabdopleura francesca n in Four new species and a ribosomal phylogeny of Rhabdopleura (Hemichordata: Graptolithina) from New Zealand, with a review and key to all described extant taxa
FIGURE 9. Rhabdopleura francesca n. sp.: A, section of creeping tube of holotype with a broken erect tube; note the small erect-tube diameter relative to the width of the creeping tube. Rhabdopleura decipula n. sp.: B, holotype NIWA 162592 (left) and paratype 1 (NIWA 161212) colonies on broken shells; C, reflected-light image of part of a paratype 2 colony (NIWA 161213) seen in transparency on smooth shell, showing a loop of one creeping-tube branch curving back on itself, with a narrow crossconnection (cc) of the pectocaulus; erect tubes and zooids (z) and a dormant body (db) also seen. D, SEM image of same colony at lower magnification, with branch loop in C at top right. E, another part of same colony seen in transparency, showing a zooid inside a creeping tube to the left (distal) of a dark dormant body. Scale bars: A, 500 μm; B, 10 mm; C, 1 mm; D, 2 mm; E, 400 μm.
FIGURE 19 in Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Baltica), Poland and Lithuania
FIGURE 19. Mature tubarium with appendix of Gothograptus obtectus Kozłowska-Dawidziuk, 1990 from the Bartoszyce IG- 1 core, depth 1677.5 m, lundgreni Biozone, Poland, ZPAL G.55/48. A. enlargement of distal part of specimen. B. enlargement of proximal end. C. whole specimen, reverse view. Abbreviations: lat. ap.—lateral apertural.
FIGURE 16 in Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Baltica), Poland and Lithuania
FIGURE 16. Tubaria of mature colonies of Gothograptus domeyki n. sp., Šiupyliai-69 core, upper part of lundgreni Biozone, Lithuania. A–B. finite tubarium with seven pairs of thecae and appendix, holotype, depth 1009,1 m, VU RET-13; A. ventrolateral view of specimen; B. enlargement of thick ancora and broken outer ancora, oblique view. C, H. finite tubarium, depth 1010.0 m, VU RET-14; C. enlargement of two thecae; H. enlargement of proximal end. D–E. fragment of finite tubarium, paratype, depth 1010.0 m, VU RET-15; D. whole specimen, ventro-lateral view; E. proximal thecae with spines. F–G. proximal end of young tubarium, depth 1010.0 m, VU RET-16; F. enlargement of proximal theca; G. enlargement of ancora
FIGURE 18 in Evolutionary significance of the retiolitine Gothograptus (Graptolithina) with four new species from the Silurian of the East European Platform (Baltica), Poland and Lithuania
FIGURE 18. Details of mature tubarium of Gothograptus kozlowskii Kozłowska-Dawidziuk, 1990 holotype, ZPAL G.XIII/43, Baltic erratic boulder 147 from Jarosławiec, Poland. A. ventral view; B. lateral view, reverse side of tubarium; C. proximal end, outside view; D. orifice of th51; E. opening of appendix.
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