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Fig. 1 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 1. Map showing study area on northern Kangaroo Island, Australia. Dashed line indicates Stansbury Basin extent.

Fig. 4 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 4. The solenopleurid trilobite Trachoparia? sp. from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Partial testate cranidia in dorsal views. A. SAM P57222 showing short (sag., exsag.) anterior border. B. SAM P57223 showing faint eye ridge and palpebral lobe. C. SAM P57224 showing wide axial and posterior border furrows. D. SAM P57225 showing deep occipital furrow and subquadrate occipital ring. E. SAM P57226 showing strongly tapered glabella and subquadrate occipital ring.

Fig. 7 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 7. The lingulid brachiopods Eoobolus sp. (A–C) and Kyrshabaktella davidi Holmer and Ushatinskaya in Gravestock et al., 2001 (D–T) from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Ventral (A–H, N, Q–T) and dorsal (I–M, O, P) valves. A. SAM P57242 in internal view. B. SAM P57243 in internal view. C. SAM P57244, in external view (C1); C2, detail of post larval shell. D. SAM P57245 in internal view. E. SAM P57246 in oblique view. F. SAM P57247 in internal view. G. SAM P57248 in internal view. H. SAM P57249 in internal view (H1); H2, detail of the interarea. I. SAM P57250 in internal view. J. SAM P57251 in internal view. K. SAM P57252 in internal view. L. SAM P57253 in internal view. M. SAM P57254 in internal view. N. SAM P57255 in external view. O. SAM P57256 in external view (O1); O2, detail of external radial and concentric ornament. P. SAM P57257 in external view. Q. SAM P57258 in external view. R. SAM P57259 in external view. S. SAM P57260 in internal view. T. SAM P57261 in internal view.

Fig. 19 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 19. The hyolithelminth tubes from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Sphenothallus-like tubes (A, SAM P57368; B, SAM P57369). Tubes with circular cross-section (C, SAM P57370; D, SAM P57371; E, SAM P57372; F, SAM P57373). Expanding tubes G, SAM P57374; H, SAM P57375; I, SAM P57376).

Fig. 16. C1 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 16. C1 sclerites of the camenellan tommotiid Dailyatia decobruta Betts sp. nov. from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. A. SAM P57340 in ventral view. B. SAM P57341 in ventral view. C. SAM P57342 in ventral view shows shortened ventral field (C1) and in oblique view (C2). D. SAM P57343 in dorsal view (D1); D2, apical view oriented to show overall convexity of sclerite. E. SAM P57344 in apical view. F. SAM P57345 in apical view. G. SAM P57346 in oblique view showing shortened ventral field (G1) and in ventral view (G2). H. SAM P57347 in dorsal view; H1–H3, show convex dorsal field with very weak plication. I. SAM P57348 in oblique dorsal view (I1); I2 shows convexity. J. SAM P57349 in oblique dorsal view; J1 shows curvature of sclerite in side view; J2 shows dorsal surface. K. SAM P57350 in dorsal view. L. SAM P57351 in oblique ventral view.

Fig. 18. C2a in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 18. C2a sclerites of the camenellan tommotiid Dailyatia decobruta Betts sp. nov. from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. A. SAM P57360 in ventral view; A1–A3, multiple views showing strong convexity and compression of sclerite. B. SAM P57361 in lateral view. C. SAM P573762 in oblique ventral view (C1); C2, slightly rotated view showing extreme compression of sclerite. D. SAM P57363 in dorsal view; D1, D2, different views showing strong curvature of sclerite and weak plication on dorsal surface. E. SAM P57364 in dorsal view, E1, E2, multiple views showing strong curvature (including weak torsion). F. SAM P57365 in ventral view. G. SAM P57359, holotype in dorsal view. H. SAM P57366 in ventral view. I. SAM P57367 in oblique ventral view.

Fig. 17. C2 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 17. C2 sclerites of the camenellan tommotiid Dailyatia decobruta Betts sp. nov. from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. A. SAM P57352 in lateral view; A1, A2 show slightly different angles to capture three dimensionality of sclerite. B. SAM P57353 in lateral view. C. SAM P57354 in dorsal view; C1, C2 show slightly different angles to capture three dimensionality of sclerite. D. SAM P57355 in ventral view. E. SAM P57356 in ventral view. F. SAM P57357 in ventral view. G. SAM P57358, G1–G3, close ups of external ornament. H. SAM P57348, close up of external ornament. I. SAM P57359, holotype; I1, I2, close ups of external ornament.

Fig. 10 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 10. The lingulid brachiopod Eohadrotreta sp. cf. E. zhenbaensis Li and Holmer, 2004 from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Dorsal (A, B, H–J, M, N) and ventral (C–G, K, L) valves. A. SAM P57276 in external view (A1); A2, detail of the larval shell. B. SAM P57277 in external view. C. SAM P57278 in internal view. D. SAM P57279 in internal view. E. SAM P57280 in external view. F. SAM P57281 in external view, tilted to show intertrough (F1); F2, detail of the foramen. G. SAM P57282 in external view, tilted to show intertrough (G1); detail of the foramen (G2) showing the intertrough. H. SAM P57283 in internal view. I. SAM P57284 in internal view; I2, close up of interarea; I3, detail of shell microstructre. J. SAM P57285 in internal view. K. SAM P57286 in internal view. L. SAM P57287 in internal view. M. SAM P57288 in internal view. N. SAM P57289 in internal view.

Fig. 9 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 9. The lingulid brachiopod Schizopholis yorkensis (Holmer and Ushatinskaya in Gravestock et al., 2001) from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Dorsal (A–C, E) and ventral (D, F) valves. A. SAM P57270 in external view. B. SAM P57271 in external view. C. SAM P57272 in external view (C1); C2, detail of the larval shell; C3, external pustulose ornament. D. SAM P57273 in external view (D1); D2, detail of the larval shell. E. SAM P57274 in internal view. F. SAM P57275 in external view (F1); F2, detail of the larval shell.

Fig. 15. The A1 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 15. The A1 sclerites of the camenellan tommotiid Dailyatia decobruta Betts sp. nov. from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. A. SAM P57329 in apical view. B. SAM P57330 in apical view (B1); B2 shows the broad, convex deltoid. C. SAM P57331 in anterior view. D. SAM P57332 in apical view. E. SAM P57333 in apical view. F. SAM P57334 in apical view. G. SAM P57335 in apical view (G1); G2 shows the concentric, wrinkled ornament on the anterior field. H. SAM P57336 in apical view. I. SAM P57337 in apical view. J. SAM P57338 in oblique lateral view. K. SAM P57339 in oblique lateral view.

Fig. 14 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 14. The camenellan tommotiid Dailyatia odyssei Evans and Rowell, 1990 from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. A. SAM P57326, A2 sclerite in apical view (A1); A2, detail of the double perforations in the apex. B. SAM P57327, A2 sclerite in apical view, tilted to show deltoid. C. SAM P57328, C2 sclerite in dorsal view.

Fig. 6 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 6. The lingulid brachiopod Eodicellomus elkaniiformis Holmer and Ushatinskaya in Gravestock et al., 2001 from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Dorsal (A–D) and ventral (E–G) valves. A. SAM P57235 in interior view. B. SAM P57236 in interior view. C. SAM P57237 in interior view. D. SAM P57238 in interior view. E. SAM P57240 in interior (E1) and oblique (E2) views. F. SAM P57241 in oblique view. G. SAM P57239 in oblique view.

Fig. 3 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 3. The solenopleurid trilobite Trachoparia? sp. from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia. Latex cast of partial cranidium (SAM P57221) showing pustulose ornament and strongly tapered glabella in dorsal (A1), anterior (A3), and oblique anterolateral (A4) views; testate cranidium in dorsal view (A2).

Fig. 2 in Shelly fossils from the lower Cambrian White Point Conglomerate, Kangaroo Island, South Australia

Fig. 2. Correlation chart showing shelly fossil biozones against the stratigraphic succession in the Flinders Ranges, Fleurieu Peninsula, and Kangaroo Island (adapted from Betts et al. 2018: fig. 27). Note: The succession in the NE Kangaroo Island is based on the Investigator-1 drill core in which the Mt. McDonnell Formation is not apparent (Gehling et al. 2011). Lower boundary of White Point Conglomerate (WPC) is likely faulted. Abundant and diverse shelly fauna (SSF) from the bioclastic limestone clasts in the WPC have an upper Dailyatia odyssei Zone age. Dashed lines indicate uncertain stratigraphic relationship. Abbreviations: K., Kulparina; P., Parabadiella; S., Sunnaginia.

Fig. 19 in An Early Miocene Dome-Skulled Chalicothere from the ''Arikaree'' Conglomerates of Darton: Calibrating the Ages of High Plains Paleovalleys Against Rocky Mountain Tectonism

Fig. 19. Right mandible (UNSM 44813) and maxilla (UNSM 44814) of the oreodont Merycochoerus magnus from the Carpenter Ranch Formation, Merycochoerus Butte, Goshen County, Wyoming.

Fig. 16 in An Early Miocene Dome-Skulled Chalicothere from the ''Arikaree'' Conglomerates of Darton: Calibrating the Ages of High Plains Paleovalleys Against Rocky Mountain Tectonism

Fig. 16. Diaphysis of chalicothere limb bone (UNSM 44825) showing greenbone fracturing produced by scavengers, with broken margins overprinted by preburial abrasion, East Sturdivant Butte, Cow Trail Notch local fauna, Carpenter Ranch Formation, Sioux County, Nebraska. Note marrow cavity packed with granitic gravel.

Fig. 12 in An Early Miocene Dome-Skulled Chalicothere from the ''Arikaree'' Conglomerates of Darton: Calibrating the Ages of High Plains Paleovalleys Against Rocky Mountain Tectonism

Fig. 12. Cranial dome of the chalicothere Tylocephalonyx (UNSM 44801), external surface of the dome, Carpenter Ranch Formation, Deahl Butte, Goshen County, Wyoming (presumed anterior face to left, dorsal upward).

Fig. 6 in An Early Miocene Dome-Skulled Chalicothere from the ''Arikaree'' Conglomerates of Darton: Calibrating the Ages of High Plains Paleovalleys Against Rocky Mountain Tectonism

Fig. 6. Type area of the Carpenter Ranch Formation, early Miocene, WyomingNebraska: (A) Cow Trail Notch stratotype section (at arrow) in NW1/4, SW1/4, NE1/4, SW1/4, sec. 36, T27N, R58W, Sioux County, Nebraska, looking northeast toward the west escarpment of East Sturdivant Butte within Sturdivant Gap. The Cow Trail Notch fauna was collected entirely from the promontory where the section was measured. The high surface of East Sturdivant Butte is mantled by a thin lag deposit of Oberg gravel not to be confused with the indurated Carpenter Ranch Formation gravel in the type section and contiguous outcrops in the gap. Sheep Creek runs in the foreground. (B) East escarpment of West Sturdivant Butte in Sturdivant Gap, looking west, immediately opposite figure 6A, showing the cliffforming Carpenter Ranch Formation caprock overlying finegrained Arikaree and White River strata. Truck on access road through the gap is situated at the WyomingNebraska state boundary.

Fig. 15. Proximal metacarpal 4 in An Early Miocene Dome-Skulled Chalicothere from the ''Arikaree'' Conglomerates of Darton: Calibrating the Ages of High Plains Paleovalleys Against Rocky Mountain Tectonism

Fig. 15. Proximal metacarpal 4 (UNSM 44804) referred to (?)Tylocephalonyx, Carpenter Ranch Formation, Goshen County, Wyoming: A, radial face showing the dorsal (d) and volar (v) facets for metacarpal 3; B, proximal articular surface for the unciform (u). Stereopairs. Finest divisions of scale in mm.

Fig. 7 in An Early Miocene Dome-Skulled Chalicothere from the ''Arikaree'' Conglomerates of Darton: Calibrating the Ages of High Plains Paleovalleys Against Rocky Mountain Tectonism

Fig. 7. Stratotype section of the Carpenter Ranch Formation (fig. 6A), west escarpment of East Sturdivant Butte, Sioux County, Nebraska, which includes the Cow Trail Notch local fauna. Early Hemingfordian mammals of the Cow Trail Notch local fauna include the dromomerycid Aletomeryx, moschid Pseudoblastomeryx, and canid Phlaocyon. Lithic symbols as in fig. 9.