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Geology, Stratigraphic Tertiary

 Subject
Subject Source: Library of Congress Subject Headings
Scope Note: Created For = NAHSTE

Found in 1 Collection or Record:

Letter to Sir Charles Lyell from Timothy Abbott Conrad, February 1840

 Item
Identifier: Coll-203/1 folio(s) 561-562
Scope and Contents Letter to Sir Charles Lyell from Timothy Abbott Conrad concerning fossil and shell specimens, the geological age of Canada shells, number of extinct shells in fluviatile deposits, number of freshwater shells in Middle and Lower Tertiary strata and the localities of tertiary strata and their fossils, February 1840.
Dates: February 1840