Figure 5 in A new fossil Euspira? (Mollusca: Gastropoda: Naticidae) from the Gubik Formation on the North Slope of Arctic Alaska

Figure 5. Close–up of spiral and radial sculpture on the body whorl of the holotype specimen. Field of view approximately 0.5 cm. Blue arrow indicates radial sculpture, red arrow indicates spiral sculpture. angle of the aperture is acute and points towards the apex. A deep, partially open umbilicus is present, but is obscured in part by the umbilical callus making it tear– drop shaped.