PLATE 86
Pterygotus prolificus nov.
Page 382
| 1 | Very small, well preserved carapace with very prominent lateral eyes. × 3 |
| 2 | Small carapace of more roundish outline and submarginal position of the eyes. Natural size |
| 3 | Large, well preserved carapace. Type. Natural size |
| 4 | Another large carapace showing the outline of the lateral eyes and the filiform border of the head shield. Natural size |
| 5 | A smaller, very roundish carapace, referred with some doubt to this species |
Pterygotus nasutus nov.
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| 6 | Type. Well preserved carapace; shows a faint ornamentation. × 2 |
| 7 | Small carapace, showing relatively greater lateral eyes, somewhat laterally compressed |
| 8 | Large carapace, showing the subcircular outline of the lateral eyes. Natural size |
| 9 | Small, undistorted carapace, showing the original outline. Natural size |
| 10 | Incomplete carapace, showing the border. Natural size |
Disjecta membra of Pterygotus
| 11–15 | Patches of integument with beautifully preserved ornamentation, characteristic of Pterygotus and exhibiting considerable variation. Figures 11–13, × 4; figure 14, × 5 |
| 16 | Paddle of swimming foot, resembling that of a Pterygotus. Natural size |
| 17 | Fragment of large metastoma, recalling in outline the metastoma of the Hughmilleria-Pterygotus group. Natural size |
| 18 | Gnathobase of coxa, probably of swimming leg. Natural size |
| 19 | Portion of chela of a Pterygotus. Natural size |
| 20 | Two segments of swimming leg. Natural size Horizon and locality. Lower Siluric: Schenectady shale. The originals of figures 1, 5, 6, 11–16 are from the Dettbarn quarry at Schenectady, those of figures 2, 7–9 and 17 from Duanesburg, that of figure 3 from Rotterdam Junction, those of figures 4 and 10 from Rexford, that of figure 18 from Central Bridge, that of figure 19 from the Bozen Kill west of Altamont. |
All the originals are in the State Museum
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