A fauna of the middle Eocene shales near Vaca-ville, California. University of California Publications in Geology, 14(No. 8) 1923: pp. 289-318. [Zoological Record Volume 61]
A fauna from the Middle Eocene shales near Vacaville, California. University of California Publications in Geology, 14 1923: pp. 289-318. [Zoological Record Volume 60]