Of all the Paleozoic Stelleroidea (174 species), not a single one is common to North America and Europe. Of genera having specific representation in more than o

Of all the Paleozoic Stelleroidea (174 species), not a single one is common to North America and Europe. Of genera having specific representation in more than o

Excerpt from Revision of Paleozoic Stelleroidea: With Special Reference to North American Asteroidea The author is greatly indebted to Dr. F. A. Bather, of the