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6 results for “Pinulasma”
FIGURE 2. Pinulasma bowiensis n in Four new species of Hexactinellida (Porifera) and a name replacement from the NE Pacific
FIGURE 2. Pinulasma bowiensis n. sp., holotype body. A. Dermal side of some larger fragments of the preserved holotype showing dermal processes projecting out and fused to form ridges. B. The largest fragment, atrial side, showing large apertures on the atrial surface that pass out into the dermal processes. C. Outer (dermal) view of a medium-size fragment, upper end left. D. lateral view of the same fragment, main wall at bottom from which dermal processes project upwards in this view. E. Outer ridge of dermal process with two parietal oscula. F. Parietal osculum with a few scopules projecting from its margin. G. Dermal lattice of loose pentactins covering the dark inhalant channels. H. Close view of dermal pentactin lattice showing variation in arrangement of spicule rays. I. Close view of atrial lattice showing a consistent uniform arrangement of spicule rays.
FIGURE 4. Pinulasma bowiensis n in Four new species of Hexactinellida (Porifera) and a name replacement from the NE Pacific
FIGURE 4. Pinulasma bowiensis n. sp., holotype spicules. A. Dermal and atrial pentactins with enlarged tangential and proximal ray ends. B. Tyloscopules, whole, enlarged ends and greatly enlarged tine club. C. Choanosomal small oxyhexactins, separate (above) and fused network (below). D. Uncinate, whole and enlarged mid-segment. E. Discohexasters 1 (above) and discohexaster 2 (below). F. Terminal ray tufts of discohexaster 1 (left) and discohexaster 2 (right). G. Oxyhexaster whole. H. Terminal rays of oxyhexaster.
FIGURE 3. Pinulasma bowiensis n in Four new species of Hexactinellida (Porifera) and a name replacement from the NE Pacific
FIGURE 3. Pinulasma bowiensis n. sp., holotype framework. A. The cleaned dictyonal framework of fragment of Fig. 1C viewed from the outer (dermal) side. B. A 5 mm thick section of the same framework viewed from the side, main wall left; note the shift in skeletal arrangement from septate main framework to dermal process framework about 1 cm out from the main wall. C. Thick cross-section of the main wall, with long-meshed primary dictyonal wall between the thick dermal cortex (right) and thin atrial cortex (left). D. Frontal view of main framework with dermal cortex intact on right side and dermal cortex dissected away on left side to reveal the long-meshed primary layer. E. Primary dictyonal layer dissected from fragment in LM. F. Framework of dermal process showing approximately even spacing between longitudinal and transverse beam lengths (lacking elongate meshes and strong septa). G. Dermal spurs. H. View of heterogeneous ornamentation of beams—some areas with dense spines and other areas without spines.
FIGURE 8. Pinulasma fistulosum n. gen., n in <strong>New glass sponges (Porifera: Hexactinellida) from deep waters of the central Aleutian Islands, Alaska</strong>
FIGURE 8. Pinulasma fistulosum n. gen., n. sp., cleaned skeletal framework. A. Longitudinal section of body wall framework (LM). B. Longitudinal section through body wall and fistule; arrowhead shows location of Figure A (LM). C. Longitudinal section of body wall showing septa (SEM). D. Surface view of body wall and fistules (LM). E. Closer view of part of D showing septa (LM). F. Dermal surface of body wall, with slight dermal cortex and one shallow epirhysis; growth direction upward (SEM). G. Similar view of atrial surface (SEM). H. Close view of framework spurs and beams showing ornamentation (SEM).
FIGURE 7. Pinulasma fistulosum n. gen., n in <strong>New glass sponges (Porifera: Hexactinellida) from deep waters of the central Aleutian Islands, Alaska</strong>
FIGURE 7. Pinulasma fistulosum n. gen., n. sp., specimens and surfaces. A. Frame grab from video footage of the holotype in situ before collection. B. Frame grab from video tape of the paratype in situ before collection. C-D. Both sides of the main parts of the dried holotype (C) and wet paratype (D) after collection. E. Closer view of the external fistules showing branching and fusion. F. Wet dermal surface of the holotype with transparent spicule lattice supported above inhalant canals. G. Closer view of atrial surface showing entrances to lumena of fistules. H. Atrial surface of wet holotype fragment showing uncovered apertures of exhalant canals.
FIGURE 9. Pinulasma fistulosum n. gen., n in <strong>New glass sponges (Porifera: Hexactinellida) from deep waters of the central Aleutian Islands, Alaska</strong>
FIGURE 9. Pinulasma fistulosum n. gen., n. sp., spicules (SEM). A. Dermal and atrial pinular hexactins, three whole variations and enlarged distal and tangential ray ends. B. Pentactin. C. Hexactin. D. Discoscopule, whole and enlarged head, shaft tip and tine end. E. Strongyloscopule, whole and enlarged head, shaft tip and tine end. F. Tauactin, whole and enlarged centrum and ray end. G. Two whole diactins with enlarged centrum and ray end. H. Uncinate, whole and enlarged central segment. I. Discohexactin, whole and enlarged ray tip and end disc. J. Hemidiscohexaster. K. Oxyhexactin and hemioxyhexaster. (All from holotype)
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