Tjalsma, R. C. Paleocene-eocene bathyal and abyssal benthic foraminifera from the Atlantic Ocean/ R. C. Tjalsma, G. P. Lohmann. - New York: Micropaleontology Press, 1983. - 90 p. : ill. ; 28 cm. - Micropaleontology special publication no.4 . Subjects--Topical Terms: Geology, Stratigraphic--Paleocene.Geology, Stratigraphic--Eocene.