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Fig. 2 in A new leanchoiliid megacheiran arthropod from the lower Cambrian Emu Bay Shale, South Australia
Fig. 2. Leanchoiliid megacheiran arthropod Oestokerkus megacholix gen. et sp. nov. Holotype SAM P43631a. A. Photograph. B. Interpretative camera lucida drawing. Arrows indicate tips of trunk exopod setae. Abbreviations: cs, cephalic shield; cx, cephalic exopods; ga, great appendage; gaf, great appendage flagellum; gap, peduncle of great appendage; mg, midgut glands; t1, tergite of trunk segment 1; tr, reinforcing ridges on telson; ts, telson marginal spines; tx, trunk exopods; txm, trunk exopod lobe margins; vm, ventral margin of tergites. Boundaries between trunk tergites indicated by dashed lines above dorsal margin.
Fig. 6 in A new leanchoiliid megacheiran arthropod from the lower Cambrian Emu Bay Shale, South Australia
Fig. 6. Leanchoiliid megacheiran arthropod Oestokerkus megacholix gen. et sp. nov. SAM P45168. A. head and anterior part of trunk. B. Detail of spinose projections of great appendages and excretory organs (sensu Bruton and Whittington 1983). Abbreviations: cs, cephalic shield; eo, excretory organ; ga, great appendage; mg, midgut glands; tx, trunk exopods.
Fig. 8 in A new leanchoiliid megacheiran arthropod from the lower Cambrian Emu Bay Shale, South Australia
Fig. 8. Strict consensus of 14 shortest cladograms (77 steps) based on character data in Table 1. Numbers above nodes are Bremer support; those below nodes are jackknife frequencies>50%. Cheliceramorpha corresponds to a clade with the same composition in Cotton and Braddy (2004).
Fig. 1 in A new leanchoiliid megacheiran arthropod from the lower Cambrian Emu Bay Shale, South Australia
Fig. 1. Geology of the area near Buck Quarry, north east coast of Kangaroo Island, South Australia (modified from García−Bellido et al. 2009).
Fig. 4 in A new leanchoiliid megacheiran arthropod from the lower Cambrian Emu Bay Shale, South Australia
Fig. 4. Leanchoiliid megacheiran arthropod Oestokerkus megacholix gen. et sp. nov. SAM P45167. A. P45167a. A1, cephalic shield and most of trunk; A2, detail of cephalic shield. B. P45167b. A2 and B light from NE. Overlap between adjacent tergites offset on left (Lol) and right (Rol) sides of body. Boundaries between cephalic shield and anterior trunk tergites delimited in B by dashed lines. Arrows mark positions of inferred dorsal transverse tendons. Abbreviations: cn1–2, cephalic endopods; cs, cephalic shield; gap, peduncle of great appendage; ol, overlap between adjacent trunk tergites; t1–t3, tergites of trunk segments 1–3; tn, trunk endopods.
FIGURE 41. Archiasterella coriacea n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 41. Archiasterella coriacea n.sp. 1, 2. ROM 62529B, BW -130. 1. Dry. 2. Detail of 1 (position marked by frame), wet/pol. 3. ROM 62530A, BW -130, wet. 4. ROM 62532, BW -130, apical part, wet.
FIGURE 42. Archiasterella coriacea n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 42. Archiasterella coriacea n.sp. 1, 2. ROM 62528A, RQ 8.4. 1. Showing distribution of sclerites, wet. 2. Showing integument, wet/pol. 3. ROM 62533A, BW -130, wet. 4. ROM 49583B, RQ 9.0, wet. Specimen attached to a Vauxia.
FIGURE 31 in Chancelloriids of the Cambrian Burgess Shale
FIGURE 31. Integument structure of Allonnia and Archiasterella. 1. Allonnia tintinopsis n.sp. ROM 62514B, RQ 9.8, dry. 2, 3. Allonnia tintinopsis n.sp., ROM 49600A, UE. 2. Dry. 3. Detail of 2 (position marked by frame), dry. 4. Archiasterella coriacea n.sp., holotype, ROM 62531A, BW -130, dry.
FIGURE 37 in Chancelloriids of the Cambrian Burgess Shale
FIGURE 37. Life reconstruction of Allonnia tintinopsis, n.sp., growing on the sponge Vauxia. Artwork Pollyanna von Knorring.
FIGURE 34. Two Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 34. Two Allonnia tintinopsis n.sp. associated with a Vauxia. Ottoia to the right. ROM 49589A, RQ 9.0, wet.
FIGURE 29 in Chancelloriids of the Cambrian Burgess Shale
FIGURE 29. Intergrowths of Allonnia tintinopsis n.sp. and Vauxia. Part, ROM 62526A (2) and counterpart, ROM 62526B (1, 3), RQ 8.4. 1. Wet. 2. Detail of part (position marked by frame in 1), wet. 3. Detail of 1 (position marked by frame), wet.
FIGURE 27. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 27. Allonnia tintinopsis n.sp., attachment to Vauxia. 1–2. ROM 62523A, RQ 8.4. 1. Wet. 2. Detail of 1 (position marked by frame), wet. 3. ROM 49620A (upper right-hand specimen is part to the one in Figure 21.11–12), RQ 9.0, wet.
FIGURE 24. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 24. Allonnia tintinopsis n.sp. intergrown with Vauxia (1, 2) and having Micromitra attached to the spines (1, 3, 4). 1. ROM 49588B, RQ 9.0, wet/pol. 2. ROM 49606, RQ 8.9, wet. 3. ROM 62520B (also in Figure 21.7), RQ 9.0, wet. 4. ROM 62515B, RQ 8.8, wet.
FIGURE 30. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 30. Allonnia tintinopsis n.sp, apical orifice with pyrite concentration. 1. ROM 49609A, RQ 9.0, dry. 2. ROM 62536, BW -400, wet/pol. 3. ROM 49582B, RQ 9.0, wet/pol. 4. ROM 49601A, RQ 9.7 (figure 1A2 in Bengtson, 2000; see that paper for details on settings).
FIGURE 25. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 25. Allonnia tintinopsis n.sp. associated with Vauxia. 1. ROM 49587B, RQ 8.3, dry. 2. ROM 49584A, RQ 8.1, wet.
FIGURE 21. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 21. Allonnia tintinopsis n.sp. Apical tufts and orifices. 1. ROM 62524A (also in Figure 17.1), RQ 8.7, dry. 2. ROM 49608a, RT, dry/pol. 3. ROM 49608b, RT, dry/pol. 4. ROM 49607A, RQ 10.7, wet/pol. 5. ROM 62525B, RQ 8.4, dry. 6. ROM 62525B, RQ 8.4, dry/pol. 7. ROM 62520B (also in Figure 24.3), RQ 9.0, wet. 8, 9. ROM 62587, RQ 8.4, wet/pol (8), wet (9). 10. ROM 49614B, RQ 9.0, dry/pol. 11, 12. ROM 49620B (counterpart to the upper right specimen in Figure 27.3), RQ 9.0, 11. Dry/pol. 12. Detail of 11 (position marked by frame), dry/pol. Scale bars in all pictures equal 1 mm.
FIGURE 23. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 23. Allonnia tintinopsis n.sp. Apical tufts. 1. ROM 49605(1), RQ 9.2, wet/pol. 2, 3. ROM 62591, UE. 2. Wet. 3. Detail of 2 (position marked by frame), wet.
FIGURE 20. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 20. Allonnia tintinopsis n.sp. with stalk-like constrictions. 1. ROM 49616B, RQ 9.1, dry. 2. ROM 49596A, RQ 8.4, dry. 3, 4. ROM 49603, RQ 8.9. 3, Dry/pol. 4. Detail of 3 (position marked by frame), dry/pol.
FIGURE 18 in Chancelloriids of the Cambrian Burgess Shale
FIGURE 18. Ray length against distance from base in Allonnia tintinopsis n.sp. ROM 49610A, RQ 11.4 (left; white squares) and ROM 49607A, RQ 10.7 (right; black circles).
FIGURE 19. Allonnia tintinopsis n in Chancelloriids of the Cambrian Burgess Shale
FIGURE 19. Allonnia tintinopsis n.sp. with stalk-like constriction. ROM 49573, ST. 1. Complete specimen, dry. 2. Detail of 1 (position marked by frame), dry, showing lower part of stalk with densely packed sclerites and debris.
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OpenNeuro
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