Woodring, W. P. & Malavassi V. E. (1961). Miocene foraminifera, mollusks, and a barnacle from the Valle Central, Costa Rica. Journal of Paleontology. 35(3): 489-497.
366878
Woodring, W. P. & Malavassi V. E.
1961
Miocene foraminifera, mollusks, and a barnacle from the Valle Central, Costa Rica