Transactions of the American Philosophical Society . I J JEngf byJJBl / PLATE ON FOSSIL RELIQTTIA. 397 REFERENCE TO THE PLATES. Plate IV. fig. 1 and 2. Upper and under sides of Phytolithus 3. Termination of Pliyt. verrucosus. fig. 4, 5 and 6. Different appearances of the areolae on Ph. 7. Phytolithus Dawsonk Plate V. fig. 1. Termination of Phytolithus sulcatus. in ironstone. fig. 2. Termination of Ph. sulcatus with part of the matrix exhi-biting the whorls of |ea»es, in sandstone,fig. 3. Phytolithus transversus, in sandstone. Plate VI. fig. 1. Ligneous im
Transactions of the American Philosophical Society . I J JEngf byJJBl / PLATE ON FOSSIL RELIQTTIA. 397 REFERENCE TO THE PLATES. Plate IV. fig. 1 and 2. Upper and under sides of Phytolithus 3. Termination of Pliyt. verrucosus. fig. 4, 5 and 6. Different appearances of the areolae on Ph. 7. Phytolithus Dawsonk Plate V. fig. 1. Termination of Phytolithus sulcatus. in ironstone. fig. 2. Termination of Ph. sulcatus with part of the matrix exhi-biting the whorls of |ea»es, in sandstone,fig. 3. Phytolithus transversus, in sandstone. Plate VI. fig. 1. Ligneous impression of Phytolithus parmatus, being theconcave matrix in ironstone. fig. 2. Fragment of Phytolithus cancellatus, the epidermal impres-sion exhibited by the conrave matrix in ironstone. fig. 3. Single rhomb of a very perfect specimen of Ph. cancellatus,in ironstone. fig. 4 and 5. Fragments of the cortical impression, both matrixand cast of Phyt. cancellatus, in sandstone. fig. 6. Ligneous impression of Ph. cancellatus, in ironstone. Plate VII. fig. 1. Kpidermal impression of
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