Cushman, J. A.; Renz H. H. (1946). The foraminiferal fauna of the Lizard Springs Formation of Trinidad, British West Indies. Cushman laboratory for foraminiferal research special publication. 18: 1-48.
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Cushman, J. A.; Renz H. H.
1946
The foraminiferal fauna of the Lizard Springs Formation of Trinidad, British West Indies
Cushman laboratory for foraminiferal research special publication