Subject ASC0003e0l
The Journal of the Quekett Microscopical Club.
ser. 2, v. 2 (1884-1886), Page 96 (1884-1886)
MBLWHOI Library
BHL Page 2225655
Keywords
disk orbitolite surface concentric rings chamberlets spire marginal pores annular canals vertical section edge simple fossil foraminifera historical taxonomy concentric section Orbitolite marginalis circle central portion vertical anal annular partition ring chamberlet