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| 1 | Carapace with three tergites; the largest observed. Natural size |
| 2 | Broken cephalothorax and portion of preabdomen, showing two walking legs with their coxal joint in position. The metastoma is partly seen, and a view from the interior of the operculum and male appendage. One of Sarle's originals. Natural size Horizon and locality. Pittsford shale. Pittsford, Monroe co., N. Y. |
Originals in the State Museum
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