Difference between revisions of "Umbilical plate"
(Created page with "File:Fig. 7f-g.png|thumb|<font size="2">'''Fig. 1.''' Alar prolongations and involuteness in lamellar foraminifers; '''A-B:''' Involuteness and evoluteness in lamellar foram...") |
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[[File:Fig. 7f-g.png|thumb|<font size="2">'''Fig. 1.''' Alar prolongations and involuteness in lamellar foraminifers; '''A-B:''' Involuteness and evoluteness in lamellar foraminifers: an accurate definition is whether or not perforate walls (double arrow) cover the next whorl. Axial section, schematic, not to scale. Note the numerous, outer lamellas (green) enveloping the total exposed surface of the previous shell (compare "lamellation"). The distribution of the inner lamella (red) covering the previous whorl hasno significance in the definition of involuteness. | [[File:Fig. 7f-g.png|thumb|<font size="2">'''Fig. 1.''' Alar prolongations and involuteness in lamellar foraminifers; '''A-B:''' Involuteness and evoluteness in lamellar foraminifers: an accurate definition is whether or not perforate walls (double arrow) cover the next whorl. Axial section, schematic, not to scale. Note the numerous, outer lamellas (green) enveloping the total exposed surface of the previous shell (compare "lamellation"). The distribution of the inner lamella (red) covering the previous whorl hasno significance in the definition of involuteness. | ||
'''Red:''' lumen of alar prolongation, yellow: lumen of equatorial chamber. | '''Red:''' lumen of alar prolongation, yellow: lumen of equatorial chamber. | ||
| − | '''alp:''' alar prolongation; '''il:''' inner lamella; '''mc:''' marginal cord; '''ol:''' (numerous) outer lamellas; '''p:''' pore; '''sulc:''' sulcus; (Hottinger, 2006; fig. 7 [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]] | + | '''alp:''' alar prolongation; '''il:''' inner lamella; '''mc:''' marginal cord; '''ol:''' (numerous) outer lamellas; '''p:''' pore; '''sulc:''' sulcus; (Hottinger, 2006; fig. 7; [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]] |
| − | [[File:Fig. 63D.png|thumb|<font size="2">'''Fig. 2.''' Comparison of foraminiferal skeletons. Schematic, not to scale. Lamellation, perforation and canal orifices omitted. D: a spiral shell with a supplemental skeleton restricted to the periphery of the shell, as in nummulitids with a marginal cord; '''ch:''' chamber; '''lh:''' loophole; '''mc:''' marginal cord; '''pr:''' proloculus; '''s:''' septum; '''spc:''' spiral canal; '''spsut:''' spiral suture; '''sulc:''' sulcus; '''t:''' tunnel; '''up:''' umbilical plate; (Hottinger, 2006; fig. | + | [[File:Fig. 63D.png|thumb|<font size="2">'''Fig. 2.''' Comparison of foraminiferal skeletons. Schematic, not to scale. Lamellation, perforation and canal orifices omitted. D: a spiral shell with a supplemental skeleton restricted to the periphery of the shell, as in nummulitids with a marginal cord; '''ch:''' chamber; '''lh:''' loophole; '''mc:''' marginal cord; '''pr:''' proloculus; '''s:''' septum; '''spc:''' spiral canal; '''spsut:''' spiral suture; '''sulc:''' sulcus; '''t:''' tunnel; '''up:''' umbilical plate; (Hottinger, 2006; fig. 63; [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]] |
| − | [[File:Fig. 54H.png|thumb|<font size="2">'''Fig. 3.''' Fossette, parafossette, ponticulus and retral process in advanced elphidiids from the Gulf of Aqaba, Red Sea. Recent; H: axial section of megalospheric specimen. Transmitted light micrograph. Note the single row of foramina at the bottom of the chamber and the broad umbilical pile with its funnels; f: foramen; suc: spiral umbilical canal; vc: vertical canal (funnel); Scale bars: 0.1 mm, double scale bars: 0.05 mm.; (Hottinger, 2006; fig. | + | [[File:Fig. 54H.png|thumb|<font size="2">'''Fig. 3.''' Fossette, parafossette, ponticulus and retral process in advanced elphidiids from the Gulf of Aqaba, Red Sea. Recent; H: axial section of megalospheric specimen. Transmitted light micrograph. Note the single row of foramina at the bottom of the chamber and the broad umbilical pile with its funnels; f: foramen; suc: spiral umbilical canal; vc: vertical canal (funnel); Scale bars: 0.1 mm, double scale bars: 0.05 mm.; (Hottinger, 2006; fig. 54; [http://paleopolis.rediris.es/cg/CG2006_M02/index.html] '''CC'''/BY-NC-SA)]] |
