by Edward Oscar Ulrich
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Cambrian bivalved crustacea of the order...
The lead, zinc, and fluorspar deposits o...
The Lower Silurian Lamellibranchiata of ...
Ozarkian and Canadian cephalopods
New and little known American paleozoic ...
Paleozoic seas and barriers in eastern N...
Bryozoan evolution
A synopsis of American fossil Bryozoa
Studies on the cyclostomatous Bryozoa
A study of the James types of Ordovician...
The upper Ordovician rocks of Kentucky a...
A monograph of the tertiary Polyzoa of V...