Sespe Eocene Didelphids

Cricetine-Like Rodents from the Sespe Eocene of California.

11 IJ (zx)xe+l exp [1/2t(1 -x2)] dx = E t" z-'-' J +x÷i (z). ,./ n~~~~~~~-O In the first two expressions the Bessel functions of the first kind (J,'s) may be replaced throughout by functions of the second kind (Y,'s); and further, if the factor (-)" in the summation involving J,,-x(z) be omitted the functions of the first kind may be replaced throughout by modified functions of the second kind ...

GEOLOGY: C. STOCK NEW CREODONTA FROM THE SESPE UPPER EOCENE, CALIFORNIA By CHESTER STOCK

Paleontolog Y: C. Stock Eocene Amynodonts from Southern California by Chester Stock

Introduction.-Since the description' of a skull of Amynodontopsis bodei and of a lower jaw referred to this species from the uppermost Eocene, further dental parts have become available for study from localities in the Sespe. These furnish additional characters of value in recognizing the species represented in western Eocene deposits. Now also available is a fragment of skull with cheek-teeth ...

Hyaenodontidae of the Upper Eocene of California.

Since the announcement' of the discovery of upper Eocene mammals in the Sespe deposits north of the Simi Valley, California, excavations have been continued in these beds, particularly at Locality 150 C.I.T. Vert. Pale., by field parties of the California Institute. Recently an opportunity has been afforded the writer to compare a number of the mammalian types found here with related forms know...

Eocene equable climates revisited

Introduction Conclusions References