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Eurypterus lacustris Harlan
Page 173
See plates 10–13
| 1 | Specimen retaining approximately natural proportions. Interior view of dorsal side except the telson which is seen from the ventral side. Postabdomen stretched and showing connecting membranes Horizon and locality. Bertie waterlime. Williams ville, Erie co., N. Y. |
Photograph. Original in the museum of the Buffalo Society of Natural Sciences
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