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CusHMAN, J. A., and Waters, J. A. 



1927. Some arenaceous foraminifera from the Upper Cretaceous of Texas. 



Contr. Cushman Lab. Foram. Res., vol. 2, pt. 4, pp. 81-85, pi. 10. 



1929. Some Arenaceous foraminifera from the Taylor Marl of Texas. 



Contr. Cushman Lab. Foram. Res., vol. 5, pp. 63-66, pi. 10, figs. 3-7. 

 Cushman, J. A., and Wickenden, R. T. D. 



1928. A new foraminiferal genus from the Upper Cretaceous. Contr. Cush- 



man Lab. Foram. Res., vol. 4, pp. 12, 13, pi. 1, figs. 1, 2. 



1930. The development of Haiitkenina in the Cretaceous with a description 



of a new species. Contr. Cushman Lab. Foram. Res., vol. 6, pp. 

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JARVIS, p. W. 



1929. Some notes on Cretaceous occurrences at Lizard Springs, Trinidad. 



Journ. Inst. Petr. Tech., vol. 15,, pp. 44CM42. 



.MCBEMAN, W. L. 



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MOKRISON, T. E. 



1929. First authentic Cretaceous formation found on Gulf coast Snlt Domes 

 of Texas. Bull. Amer. Assoc. Petr. Geol., vol. 13, pp. 1065-1069. 

 Reuss, a. E. 



1861. PalJiontologische Beitrjlge. 4, Die Foraminiferen des senonischen 

 Griinsandes von New Jersey. Sitz. Akad. Wiss. Wien, vol. 44, 

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 Tyrrell, J. B. 



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1928-29. Some index foraminifera of the Tampico Embayment area of 

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Family ASTRORHIZIDAE 



Genus RHABDAMMINA M. Sars, 1869 



RHABDAMMINA DISCRETA H. B. Brady 



Plate 1, Figures 1, 2 



In our material we have abundant broken specimens similar to 

 those here figured. They have been referred to Brady's species, 

 which they very closely resemble. The surface is roughened, but 

 none of them shows any central chamber. It is worthy of note here 

 that Franke in his work on the Cretaceous of Germany described a 

 species as Astrorhisa cretacea Franke. It may be possible that our 



