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1. Late Paleozoic Sponge Faunas of the Texas Region : The Siliceous Sponges

by R. E. H. R.

Source: Geological magazine : Vol. 98 Iss. 1-6 Year. 1961Material type: Article Article; Format: print Availability: Items available for reference: (1).

2. Sponges of the burgess shale (Middle Cambrian), British Columbia

by R. E. H. R.

Source: Geological magazine : Vol. 124 Iss. 1-6 Year. 1987Material type: Article Article; Format: print Availability: Items available for reference: (1).

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