Chimaeroid Egg Capsule
Oligocene
Keasey Formation
Nehalem River - Columbia County - near Vernonia, Oregon
Click on pictures to MagnifyThis fossil was found in August 2009 on a NARG (North America Research Group) field trip.
Modern (Ghost shark) egg capsule
Click on picture to Magnify
Ghost shark egg capsule - Callorhinchus milii
http://www.flickr.com/photos/nuytsia_pix/320399494
References
Fossil Egg Capsules of Chimaeroid Fishes (PDF)
Roland W. Brown
Journal of Paleontology, Vol. 20, No. 3 (May, 1946), pp. 261-266
Special thanks to Peg Johnson for permission
to archive her photographs of this rare fossil.
Permission required for use of these images on
other websites or in paper publications.