Paleontology in 1969

Flagellata: (Calcioflagellata: Coccolithineae Et Discoasterineae) by Kamptner, Erwin, Kühn, Othmar, Flügel, Helmut W.

Fossile Nicht-Marine Mollusken-Faunen Aus Nordchina by Yen, John Teng Chien, Tschugguel, Margarethe