by Robert Edward Hay Reid
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Tremacystia, barroisia, and the status o...
Microscleres in demosponge classificatio...
Sponges and Spongimomorphs
Paleontologic papers
The upper cretaceous hexactinellida of G...
Upper Permian Inozoid, Demospongid, and ...
Die Entwicklung der Hexactinellida seit ...