2 Ergebnisse für: univalves
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Natural history. Mollusca - Philip Henry Gosse - Google Books
http://books.google.de/books?id=zjsDAAAAQAAJ
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A Monograph of the Eocene Mollusca of England - Frederic E. Edwards, Searles V. Wood - Google Books
https://books.google.de/books?id=tjzJBAAAQBAJ&pg=PA46&lpg=PA46&dq=shell+%22reflected+backwards%22+umbilicus&source=bl&ots=JWLS4k
The Eocene sediments of the London and Hampshire basins in southern England are rich in fossil invertebrates, plants and vertebrates; in particular, they yield a great diversity of often well-preserved fossil mollusc shells. Seeking to provide a methodical…