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McCaleb |
1968 |
Lower Pennsylvanian Ammonoids from the Bloyd Formation of Arkansas and Oklahoma.
Special Paper of the geological Society of America, 96: 1-123, fig.1-27, pl.1-12; Boulder,Colorado.
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Zachry |
1962 |
Middle Bloyd goniatites from Arkansas.
Research Reports, National Science Foundation Undergraduate Research Participation Program, University of Arkansas,p.74-82,1 pl.,1 tabl.,Fayetteville.
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