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186 results for “disjunct distribution”
Figure 24. Majority-rule consensus trees. A in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 24. Majority-rule consensus trees. A, Majority-rule of 16 941 trees from unordered analysis. B, Majority-rule of 208 most parsimonious trees resulting from ordering one character, shell shape. Number in plain typeface indicates percentage of most parsimonious trees which support node. Number in italics (if present) indicates bootstrap support for each node. Number in boldface (if present) indicates Bremer index for each node.
Figure 20 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 20. Spines of Afrocardium exochum (ANSP 293709). A, radial section through central portion of a rib to illustrate shell microstructure. Direction of ventral margin to left, direction of umbo to right. B, SEM of detail of exterior of right valve. Note alternation of one wider rib covered with larger triangular spines with one narrower rib covered with smaller triangular spines. C, SEM of dorsal view of right valve. Again, note alternating rib width and spine strength. Scale bars: A = 0.1 mm; B, C = 0.2 mm.
Figure 22 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 22. Right valve of Freneixicardia verrucosa, A, AMNH 3094/2. Scanning electron stereomicrographs of cardinal area of hinge. ac shape 0, pc shape 0. B, NHM L7962, internal view. C, NHM L7962, posterior slope. Arrows indicate sets of heavily imbricated spines. D, NHM L7962. Dorsal view. Scale bars: A = 2 mm; B−D = 5 mm.
Figure 27 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 27. Hedecardium (Iheringicardium). A, ventral margin of right valve of H. (I) patagonicum (NHM PI TB4). White arrows indicate interspaces in which secondary radial threads are visible. Black arrows indicate primary radial threads on top of ribs. Scale bar = 10 mm. B, ventral margin of left valve of H. (I) philippii (NHM PI TB1). Arrow points to doubled rib. Scale in mm indicated on figure. C, external view of left valve of H. (I) ameghinoi (NHM L12549), hedeform shell shape. Arrows point to doubled ribs. Scale bar = 10 mm. D, closeup of ventral margin of same specimen as in C. Arrow points to
Figure 18. A−D in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 18. A−D, posterior views of paired valves. A, Cardium costatum (UMMZ 30845). B, Bucardium ringens (UMMZ 24727). C, Dinocardium robustum (UMMZ 265445). D, Planicardium virginianum (UNC 11856). E, Schedocardia hatchetigbeense (ANSP 8756), oblique posteror view of right valve. F, Schedocardia hatchetigbeense (ANSP 8756), anterior slope. Scale bars: A,C−E = 10 mm; B = 5 mm.
Figure 17 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 17. External views of ventral margins of right valves. Arrows point to notches on posterodorsal portion of spines. A, Vepricardium multispinosum (ANSP 54220). Scale bar = 5 mm. B, Acanthocardia (Acanthocardia) aculeata (ANSP 54235). Scale bar = 10 mm.
Figure 29 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 29. Right valve of Freneixicardia hausmanni. A, AMNH 977/1. Scanning electron stereomicrograph of cardinal area of hinge. B, NHM PI TB9, internal view. C, NHM PI TB9, oblique posterior view. D, NHM PI TB9, external view. Note alternating narrow and wide ribs on central part of shell (also see Fig. 10D). Scale bars: A = 2 mm; B−D = 5 mm.
Figure 15 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 15. Stereophotos of hinges of right valves. A, Afrocardium exochum (ANSP 293709): ac shape 0, pc shape 0. B, Hedecardium (Iheringicardium) ameghinoi (NHM L12529): ac shape 0, pc shape 0. C, Europicardium multicostatum (PI TB5): ac shape 2, pc shape 0. Scale bars: A = 0.5 mm; B, C = 5 mm.
Figure 14 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 14. Hinges of right valves. A, Agnocardia spinosifrons (USGS 26439): ac shape 1, pc shape 0. B, Planicardium virginianum (USNM 2831): ac shape 7, pc shape 2. C, Hedecardium (Hedecardium) waitakiense (DSIRGS 10837): ac shape 0, pc shape 0. Scale bars: A = 5 mm; B, C = 10 mm.
Figure 16 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 16. Stereophotos of hinges of right valves. A, Nemocardium bechei (ANSP 252661): ac shape 0, pc shape 0. B, Schedocardia hatchetigbeense (ANSP 8756): ac shape 0, pc shape 0. C, Plagiocardium granulosum (ANSP 6268): ac shape 8, pc shape 3. D, Orthocardium porulosum (ANSP 6266): ac shape 0, pc shape 0. Scale bars: A, B, D = 10 mm; C= 2 mm.
Figure 23 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 23. External view of left valves. A, adult of Loxocardium obliquum (FMNH PE3642). B, juvenile of Europicardium multicostatum (NHM PI TB6). Note loxofrom shell shape of A and B. C, adult of Europicardium multicostatum (NHM L8760), europiform shell shape. All scale bars = 1 mm.
Figure 13 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 13. Stereophotos of cardinal areas of hinges of right valves. A, Vepricardium multispinosum (ANSP 54220): ac shape 3, pc shape 0. B, Dinocardium robustum (FMNH 278011): ac shape 0, pc shape 0. C, Chesacardium laqueatum (FMNH UC7082): ac shape 7, pc shape 0. All scale bars = 10 mm.
Figure 12 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 12. Stereophotos of cardinal areas of hinges of right valves. A, Cardium costatum (ANSP 54110): ac shape 4, pc shape 1. B, Bucardium ringens (UMMZ 24727): ac shape 5, pc shape 1. C, Acanthocardia (Acanthocardia) aculeata (UNC 15376): ac shape 6, pc shape 1. D. Acanthocardia (Rudicardium) tuberculata (ANSP 53195): ac shape 6, pc shape 1. Scale bars: A = 5 mm; B−D = 10 mm.
Figure 10 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 10. External views of right valves. A, Hedecardium (Hedecardium) waitakiense (DSIRGS 10837), hedeform shell shape. Scale bar = 10 mm. B, Freneixicardia verrucosa (NHM L7962), circular shell shape. Scale bar = 5 mm. Arrow indicates set of imbricated spines.
Figure 11 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 11. Internal views of right valves. A, Cardium costatum (ANSP 54110). Note strong internal expression of radial ribs, absence of impression of adductor muscle scars. Scale bar = 10 mm. B, Plagiocardium granulosum (ANSP 6268). Scale in cm indicated in figure. C, Orthocardium porulosum (ANSP 6266). Scale bar = 10 mm. In B and C, radial ribs expressed internally only at shell margin; adductor muscle scars impressed. Only anterior adductor muscle scar labelled; posterior adductor muscle scar equally well-impressed into shell, but not readily visible in these views due to foreshortening.
Figure 8. A in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 8. A, Afrocardium exochum (ANSP 293709), exterior of right valve, circular shell shape. B, Loxocardium obliquum (FMNH PE 3642), exterior of right valve, loxoform shell shape. C, Schedocardia hatchetigbeense (USNM 645087), exterior of left valve, schediform shell shape. Scale bars: A = 1 mm; B, C = 10 mm.
Figure 9 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 9. External views of right valves. A, Europicardium multicostatum (NHM PI TB5), europiform shell shape. B, Dinocardium robustum (ANSP 186595), dinoform shell shape. C, Vepricardium multispinosum (ANSP 54220), circular shell shape. D, Bucardium ringens (ANSP 54234), circular shell shape. All scale bars = 10 mm.
Figure 7 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 7. External views of right valves. A, Agnocardia spinosifrons (USGS 26439), circular shell shape. B, Plagiocardium granulosum (ANSP 6268), oval shell shape. C, Granocardium kuemmeli (AMNH 45042), ovate shell shape. D, Acanthocardia (Acanthocardia) aculeata (ANSP 54235), cardiiform shell shape. E, Orthocardium porulosum (ANSP 6266), circular shell shape. Scale bars: A, C−E = 10 mm; B = 5 mm.
Figure 4 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 4. External anatomy of right side of cardiids. A, Dinocardium robustum (LACMNH 50–53.2), scale bar = 10 mm. B, Bucardium ringens (NHM Acc. no. 2322), scale in cm indicated on figure.
Figure 6 in Phylogeny of cardiid bivalves (cockles and giant clams): revision of the Cardiinae and the importance of fossils in explaining disjunct biogeographical distributions
Figure 6. External views of right valves. A, Cardium costatum (ANSP 54110), cardiiform shell shape. B, Nemocardium bechei (ANSP 252661), quadrate-short shell shape. C, Planicardium virginianum (USNM 2831), planiform shell shape. All scale bars = 10 mm.
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