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160 results for “Cerithioidea”
FIGURE 12 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 12. Radula of Pseudocleopatra voltana Mandahl-Barth, 1973, paratype, Apaso village, DBL 2592. A. Radula ribbon, scale bar: 25 μm. B. Lateral and central teeth; scale bar: 5 μm. C. Cutting edge of lateral and central teeth; scale bar: 3 μm. D. Central, lateral and marginal teeth; scale bar: 5 μm.
FIGURE 13 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 13. Radula of Pseudocleopatra voltana Mandahl-Barth, 1973, paratype, Daboya, DBL 2594. A. Radula ribbon, scale bar: 25 μm. B. Lateral and central teeth; scale bar: 20 μm. C. Cutting edge of lateral and central teeth; scale bar: 6 μm. D. Central, lateral and marginal teeth; scale bar: 8 μm.
FIGURE 11 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 11. Shells of Pseudocleopatra voltana Mandahl-Barth, 1973. A. Holotype, DBL 2594-1. B. Paratype, from the type locality; DBL 2594-2. C. Paratype, from the type locality, DBL 2594-3. D. Paratype, Ghana, NE region, without exact locality, DBL 2593. E. Paratype, Mogeyenga village, DBL 2591. F. Paralectotype of Pseudocleopatra togoensis Thiele, 1928, ZMB 190049. Scale bar: 5 mm.
FIGURE 21 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 21. Known occurrence records of Pseudocleopatra broecki (Putzeys, 1899) n. comb. in the Congo River system. Asterisks indicate type localities; 1: type locality of Cleopatra broecki Putzeys, 1899 and Cleopatra broecki var. zonata Putzeys, 1899; 2: type locality of Pseudocleopatra bennikei Mandahl-Barth, 1974. The arrow indicates the approximate location of the Inga dams.
FIGURE 10 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 10. Known occurrence records of Pseudocleopatra togoensis Thiele, 1928 in the Volta River system. The asterisk indicates the type locality. The arrow indicates the approximate location of the Akosombo dam.
FIGURE 9 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 9. Radula of Pseudocleopatra togoensis Thiele, 1928, Ghana, NE region, DBL 214. A. Radula ribbon; scale bar: 20 μm. B. Lateral and central teeth; scale bar: 10 μm. C. Cutting edge of lateral and central teeth; scale bar: 2 μm. D. Central, lateral and marginal teeth; scale bar: 20 μm.
FIGURE 8 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 8. Opercula of Pseudocleopatra Thiele, 1928 species. A. Lectotype of P. togoensis Thiele, 1928, ZMB 190048b. B. Paratype of Pseudocleopatra voltana Mandahl-Barth, 1973, Mogeyenga village, DBL 2591. C. Probable paratype of Pseudocleopatra dartevellei Mandahl-Barth, 1973, Matadi, DBL 2583. D. Pseudocleopatra broecki (Putzeys, 1899) n. comb., MCZ 171520. E. Lectotype of Pseudocleopatra broecki (Putzeys, 1899) n. comb., MRAC 47360. Scale bar: 1mm.
FIGURE 7 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 7. Shells of Pseudocleopatra togoensis Thiele, 1928. A. Lectotype, ZMB 190048a. B. Oti River at Bdakune village, DBL 2601. C. NE-Ghana, DBL 214. D. White Volta River, DBL 12761. Scale bar: 5 mm.
FIGURE 16 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 16. Radula of Pseudocleopatra dartevellei Mandahl-Barth, 1973 (Morph a), probable paratype, Île des Princes, MRAC 146342. A. Radula ribbon, scale bar: 10 μm. B. Lateral and central teeth, scale bar: 10 μm. C. Cutting edge of lateral and central teeth, scale bar: 10 μm. D. Central, lateral and marginal teeth, scale bar: 10 μm.
FIGURE 6 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 6. Total variance of examined shell shapes and results of geometric morphometrics analyses of Pseudocleopatra Thiele, 1928 species and Cleopatra bulimoides (Olivier, 1804). A. Relative variance of shell shape along PC1 and PC2. The colours of dots imply species affiliations. Depicted thin plate splines represent shell shapes of individuals with the highest and lowest value along PC1. B, F. Variance of shell shapes of PC1 (B) and PC2 (F). Arrow heads indicate the maximum value on the respective shape axis, whereas grey dots indicate the minimum value. C, E. Boxplots for PC1 (C) and PC2 (E) of shell shape sorted according to species. Significant differences (p <0.05) are indicated by bars. D. Total variance of landmark positions; grey dots correspond to all positions of all landmark sets; black dots indicate the mean position of each landmark across the complete data set.
FIGURE 4 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 4. Multivariate ratio analysis of shell measurements of Pseudocleopatra togoensis Thiele, 1928, P. voltana Mandahl- Barth, 1973, P. dartevellei Mandahl-Barth, 1973 and P. broecki (Putzeys, 1899) n. comb. A. Plot of isometric size vs. first principal component in shape space. B. Plot of isometric size vs. second principal component in shape space. C. Plot of isometric size vs. third principal component in shape space. D. Plot of first vs. second principal component in shape space. E. Plot of first vs. third principal component in shape space. F. Plot of second vs. third principal component in shape space. G. PCA ratio spectrum of the first principal component. H. PCA ratio spectrum of the second principal component in shape space. I. PCA ratio spectrum of the third principal component in shape space. J. Allometry ratio spectrum. Vertical bars in G–I = 68% confidence intervals based on 500 bootstrap replicates. For abbreviations of measured shell variables, see Fig. 2.
FIGURE 2 in Adding the West-African riverine component: Revision of the Recent freshwater snails belonging to Pseudocleopatra Thiele, 1928 (Caenogastropoda, Cerithioidea, Paludomidae)
FIGURE 2. Shell measurements and positions of landmarks and sliding landmarks. A. Shell measurements of the adult shell. Abbreviations: h—shell height, w—shell width, bw—last whorl height, la—aperture height, wa—aperture width. B. Dots indicate positions of landmarks, lines indicate lines of sliding landmarks (colours indicate different total numbers of sliding landmarks).
Figure 12 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 12. Midgut anatomy of Melanopsidae. A, Holandriana holandri (ZMB 106.145). B, Melanopsis praemorsa (ZMB 106.066). Scale bars: 1.0 mm; refer to the text for a list of anatomical abbreviations.
Figure 19 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 19. Midgut evolution of cerithioideans. Bayesian topology for the combined morphological plus molecular data sets (16S and 28S) (Strong et al., in press; figs 7b, 10). *Nodes shared with topology based on morphological characters alone; the grey arrow indicates a node (uniting Groups 2 and 3) that appears in the morphological phylogeny, with the exception of Scaliolidae. The optimization of 28 midgut characters is shown using ACCTRAN optimization. Characters in bold represent changes shared with the morphology topology. Black hashmarks indicate forward changes; white hashmarks indicate homoplasies. Partitioned Bremer support for other morphological characters (above) and for midgut characters (below) for nodes shared with the combined morphological plus molecular parsimony topology are indicated at the nodes on the left; posterior probabilities are indicated at the nodes on the right. Three main assemblages are numbered. White arrows indicate families resolved as non-monophyletic.
Figure 16 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 16. Midgut anatomy of Pleuroceridae (A) and Semisulcospiridae (B). A, Elimia virginica (USNM 1143353). B, Semisulcospira libertina (ZMB 102.184). Scale bars: 1.0 mm; refer to the text for a list of anatomical abbreviations.
Figure 3 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 3. Midgut anatomy of Batillariidae. A, Pyrazus ebeninus (USNM 828830). B, Velacumantus australis (USNM 1083383). Scale bars: 1 mm; refer to the text for a list of anatomical abbreviations.
Figure 7 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 7. Midgut anatomy of Litiopidae. A, Alaba monile (USNM 858584). B, Alaba opiniosa (USNM 1084214). C, Litiopa melanostoma (USNM 1143355). D, Styliferina translucida (USNM 1084087). Scale bars: 0.5 mm; refer to the text for a list of anatomical abbreviations.
Figure 8 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 8. Midgut anatomy of Modulidae. Modulus modulus (USNM 1143356). Scale bar: 1.0 mm; refer to the text for a list of anatomical abbreviations.
Figure 6 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 6. Midgut anatomy of Dialidae (A) and Diastomatidae (B). A, Diala sulcifera scobina (USNM 1083788). Scale bar: 0.5 mm. B, Diastoma melanioides (USNM 801614). Scale bar: 1.0 mm. Refer to the text for a list of anatomical abbreviations.
Figure 11 in More than a gut feeling: utility of midgut anatomy in phylogeny of the Cerithioidea (Mollusca: Caenogastropoda)
Figure 11. Midgut anatomy of Siliquariidae (A) and Turritellidae (B, C). A, Tenagodus squamatus (USNM 801714). B, Turritella communis (SMF). C, Maoricolpus roseus (ZMB 102.962). Scale bars: 1.0 mm; refer to the text for a list of anatomical abbreviations.
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