Fig. 3 in Soft-part preservation in two species of the arthropod Isoxys from the middle Cambrian Burgess Shale of British Columbia, Canada

Fig. 3. Bivalved arthropod Isoxys acutangulus (Walcott, 1908), Raymond Quarry Shale Member, Burgess Shale Formation, middle Cambrian, near Field, British Columbia, Canada (see Fig. 1), general morphology. A. ROM 57898A; A1, specimen showing large stalked eyes and the pair of raptorial frontal appendages; A2, line drawing of specimen. B. ROM 57914A; B1, partially decayed specimen with most of body and appendages rotated towards the front; B2, line drawing of specimen. C. ROM 57899A; C1, specimen with raptorial appendages oriented backwards and possible telson flaps; C2, line drawing of specimen. D. ROM 59871A; D1, considerably decayed specimen showing forward rotation of body and appendage remains; D2, line drawing of specimen. All laterally compressed specimens and polarized light. Midgut glands in gray tone.