Difference between revisions of "Parapores"
(Created page with "__FORCETOC__ ==Definition== *''according to Hottinger (2006):'' '''PARAPORES''' (canaliculi; pseudopores, pars auct.) is in agglutinated foraminifera: straight to tortuous t...") |
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| + | [[File:Fig 51.jpg|thumb|<font size="2">'''Fig. 1.''' Fistulose chamberlets. All specimens from the Gulf of Aqaba, Red Sea, Recent. | ||
| + | '''A-C:''' ''Sahulia kerimbaensis'' (Said). '''A:''' Detail of an edge view, SEM graph; '''B:''' side view, X-ray graph, black background removed. Note the narrowness and the irregularity of the fistulose chamberlets in this species. '''C:''' edge view, SEM graph. '''D-H:''' ''Spirotextularia floridana'' (Cushman). '''D:''' paraporous partition separating the chamber lumen from a fistulose chamberlet. SEM graph. '''E:''' Detail of sectioned paraporous partition. SEM graph. Note the organic lining that closes off the parapores from the chamber lumen. SEM graph. '''F:''' Shell fragment broken in a direction perpendicular to the shell axis, showing paraporous partition between the chamber lumen and the fistulose chamberlet. SEM graph. '''G:''' Lateral view, X-ray graph. '''H:''' lateral view of an entire specimen. SEM graph. Note the spiral arrangement of the nepionic chambers. | ||
| + | '''a:''' [[aperture]]; '''af:''' [[apertural face]]; '''ch:''' [[chamber lumen]]; '''f:''' [[foramen]]; '''fis:''' fistulose chamberlet; '''OL:''' organic lining; '''pp:''' [[parapores]]; '''ppa:''' paraporous partition; '''pr:''' [[proloculus]]; '''pv:''' [[pavement]]; '''s:''' [[septum]]; (Hottinger, 2006; fig. 51)[http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]] | ||
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| + | [[File:Fig 06.jpg|thumb|<font size="2">'''Fig. 2.'''Agglutination in foraminiferan walls; Gulf of Aqaba, Red Sea; Recent. | ||
| + | '''A-C:''' ''Textularia'' sp. C in Hottinger et alii, 1993. '''A:''' Lateral view showing coarse grains producing a rugged shell surface exept on apertural face. SEM. '''B:''' axial thin section of the biserial test showing distribution of agglutinated grains within the shell walls. Light microscope, transparent light. C: Detail from another specimen showing parapore texture of wall and its relation to the agglutinated grains. Transmitted light. '''D-G:''' ''Agglutinella'' sp., an agglutinating, porcelaneous miliolid. '''D:''' lateral view showing coarse agglutination at the shell's suface. E: apertural view showing large aperture with a porcelaneous peristomal rim and a miliolid tooth. SEM. '''F-G:''' ''Schlumbergerina alveoliniformis'' (Brady), thin sections in the - and perpendicular to the - apertural axis, showing early growth stages without apparent agglutination and a very thin basal layer coating the rugged surface of adult chambers of the previous whorl. Transmitted light; '''a:''' [[aperture]]; '''bl:''' [[basal layer]]; '''f:''' [[foramen]]; '''mt:''' [[miliolid tooth]]; '''pp:''' [[parapores]]; '''pr:''' [[proloculus]]; '''s:''' [[septum]]; '''sut:''' (chamber) suture; '''tph:''' [[trematophore]]' (Hottinger, 2006; fig. 6)[http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]] | ||
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==Definition== | ==Definition== | ||
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