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of line. The upper margin of the clays is not always well marked in the sections being sometimes [[strikethrough]] wel [[/strikethrough]] indistinguishably merged with the alluvial and similarly colored with iron derived from the alluvial  The fossils are beside the Purpura (?) [[insertion]] ^ or Fusus [[/insertion]] a variety of bivalves, macoma Acila, a grooved yoldia like lanceolata, a smooth one like amygdala, a truncate one like obesa(?)  A large Pecten [[insertion]] ^ (cerrosensis?) [[/insertion]] with stronger ribs than caurinus.  A mesalia or Turritella, slender with elevated spirals, two inches or less long. a large coarsely grooved Dentalium (like Albatross sp. but less curved & more cylindrical) a small Natica, a Cytherea, an Axinus, a large Lima 
From Shoalwater Bay Mr. White showed me silicicous casts of the Purpura, the Dentalium, the Mesalia, the Cytherea, a Macoma and [[underlined]] Aturia ziczac [[/underlined]], which would suggest a very late Eocene or Early Miocene age for these clays

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