كتب ذات صلة

The upper Ordovician rocks of Kentucky and their bryozoa.

Studies on the Cyclostomata Operculata.

Spechts Ferry (Middle Ordovician) bryozoan fauna from Illinois, Wisconsin, and Iowa.

Redescription of type specimens of species of the bryozoan genera Monticulipora, Mesotrypa, Peronopora, and Prasopora, from the upper Ordovician rocks of Toronto and vicinity, Ontario, Canada

• Bibliographic index of American Ordovician and Silurian fossils
  المؤلفون: Bassler, Ray S.
• Bibliographic index of American Ordovician and Silurian fossils
  المؤلفون: Bassler, Ray S.
• Cambrian and Ordovician [deposits of Maryland, by R. S. Bassler]
  

• Summary of survey of oyster bars of Maryland, 1906-1912
  المؤلفون: Yates, Charles C.
• Special report on the market for American horses in foreign countries.
  
• Report upon natural history collections made in Alaska : between the years 1877 and 1881
  المؤلفون: Henshaw, Henry W. ,  Nelson, Edward William