by Isaac Lea
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Contributions to geology
A synopsis of the family of Naiades
A synopsis of the family Unionidae
Further notes on "inclusions" in gems, e...
Observations on the genus Unio
Fossil foot-marks in the red sandstone o...
Noah's Ravens
The tracks of Triassic vertebrates
Ichnographs from the sandstone of Connec...
Dinosaur tracks and traces
Dinosaur Tracks
Ichnology of New England