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5 results for “Janulum”
FIGURE 4 in First record of a living species of the genus Janulum (Class Demospongiae) in the Southern Hemisphere
FIGURE 4. Megascleres and skeletal arrangement of Janulum filholi (Topsent, 1890), unregistered, Monaco Oceanographic Museum, Station 105 (1892), 927 m: A, B. acanthose strongyles; C. thick section showing multispicular isodictyal arrangement of acanthose strongyles in the skeleton (Fig. 4B, C reproduced with permission from Redmond et al. 2013; Fig. 5d, c).
FIGURE 3 in First record of a living species of the genus Janulum (Class Demospongiae) in the Southern Hemisphere
FIGURE 3. Morphology and megascleres of New Zealand Janulum species: A. Janulum princeps sp. nov., spined strongyle, length 160 µm, width 20 µm, reproduced from Hinde & Holmes (1892: Plate 7, Fig. 51); Janulum imago sp. nov., holotype NIWA 94196: B. spined strongyles showing a range of curvature of the ends of the spicules; C. preserved holotype encrusting the stony coral Solenosmilia variabilis; D. close-up of surface showing oscules and larger perforations; E. view through sponge surface showing choanosomal isodictyal reticulation and tangential reticulation lining two canals; F. close-up view of strongyles in isodictyal reticulation.
FIGURE 1 in First record of a living species of the genus Janulum (Class Demospongiae) in the Southern Hemisphere
FIGURE 1. Study area showing the collection locality for Janulum imago sp. nov., Forde Guyot, Louisville Seamount Chain in International Waters to the east of New Zealand, and location of the Oamaru Diatomite (Late Eocene) from which J. princeps sp. nov. was illustrated by Hinde & Holmes (1892); □ Janulum imago sp. nov.; ○ Janulum princeps sp. nov.
FIGURE 2 in First record of a living species of the genus Janulum (Class Demospongiae) in the Southern Hemisphere
FIGURE 2. Morphology and megascleres of northeast Atlantic Janulum spinispiculum (Carter, 1876): A. BELUM Mc7745, West Coast of Ireland, deck photo, specimen 40 mm high x 30 mm wide; B. ZMA Por. 19461, southeast Rockall Bank, 680 m, specimen 10 cm long; C. lightly spined strongyles showing a range of morphologies, ZMA Por. 19461, photo E.J. Beglinger; D. thick section showing isodictyal arrangement of spined strongyles, BELUM Mc7745 (Fig. 2D reproduced with permission from Redmond et al. 2013; Fig. 5a); E. spined strongyles from Lundbeck (1902, Pl. XII, Fig. 4a–b), as Metschnikowia spinispiculum, east of Iceland; F. spined microfossil strongyle from a Neogene deep-sea core (about 3–23 Ma) from west of Iceland (reproduced from Bukry, 1978, Pl. 7, Fig. 20).
FIGURE 1 in Genetic data confirms the enigmatic demosponge Janulum as haplosclerid
FIGURE 1. Maximum likelihood phylogram to highlight the phylogenetic position of Janulum. Newly sequenced taxa are in bold. Numbers following the species names are collection numbers (for the new sequences) or NCBI-Genbank accession numbers. The inset in grey is based on the separate, haplosclerid-only alignment of the same taxa (rooted with Gelliodes callista KC869562 and Xestospongia deweerdtae KP081747). Numbers above branches are RAxML rapid bootstrapping support values (if larger than 70). Scale bars indicate substitutions per site.
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