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Figure 3 | BMC Evolutionary Biology

Figure 3

From: Morphology and function in the Cambrian Burgess Shale megacheiran arthropod Leanchoilia superlata and the application of a descriptive matrix

Figure 3

Leanchoilia superlata Walcott, 1912, head region. A, ROM 61869, dorsal view of head shield with rostrum and wings plus first trunk segment with carinae, note the marginal serration (arrows); B, ROM 61892, dorsal view of isolated head with great appendage and small second appendage, posterior shield area with carinae similar to those on the trunk tergites; C, ROM 61862, ventral view with hypostome, insertion areas of first and second appendage apparent; D, ROM 61894, dorsal view, a pair of eye structures and the insertions of the great appendages evident through the shield; E, ROM 61864, dorso-lateral view with dorsally curving rostrum, image flipped horizontally; F- H, Eye structures; F, ROM 61897, ventral view of eye structures with short stalks; G, ROM 61874; H, ROM 61887; additional abbreviations: es = eye structures; hyp = hypostome; sk = stalk; t = trunk segment.

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