Gabb, W. M. (1861). Descriptions of some new species of Cretaceous fossils from South America, in the collection of the Academy. Proceedings of the Academy of Natural Sciences of Philadelphia. 1860: 197-198.
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Gabb, W. M.
1861
Descriptions of some new species of Cretaceous fossils from South America, in the collection of the Academy
Proceedings of the Academy of Natural Sciences of Philadelphia