Wonderful Life: The Burgess Shale and the Nature of History by Stephen Jay Gould

Author:Stephen Jay Gould [Gould, Stephen Jay]
Language: eng
Format: epub, mobi, azw3, pdf
ISBN: 9780393307009
Publisher: W. W. Norton & Company
Published: 1990-09-17T00:00:00+00:00

3.63. The specimen dissected by Harry Whittington that revealed the true nature of Anomalocaris. In this camera lucida drawing, the mouth misidentified by Walcott as the jellyfish Peytoia is at top center (labeled Pp); the oblique line (ve) just above it represents a crack in the rock. The structure originally named Anomalocaris is the curved feeding appendage just to the left of the mouth with its middle segment labeled j5. Also visible is the trace of the central gut, or alimentary canal (al).

But Whittington’s specimen back in England bore Anomalocaris, not appendage F, in this frontal position (see figure 3.63). When he dissected this specimen more fully, he found traces of both the Peytoia mouth and a second Anomalocaris, forming a pair of feeding organs in the same position as the appendage-F pairs on the specimens in Washington (figure 3.64).

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