Classification of Giers 1964

Ph. Porifera Grant 1836 [sponge]
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G. †Phymoraphinia Schrammen
Cl. Cephalopoda Cuvier 1797
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G. †Ancyloceras d'Orbigny 1842
Cl. Bivalvia Linnaeus 1758 [clam]
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G. †Neaera Gray 1834