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Protoarmstrongia Caster 1941
urn:lsid:organismnames.com:name:3076057
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Protoarmstrongia Caster 1941
Caster 1941. The Titusvilliidae; Palaeozoic and recent branching Hexactinellida. Palaeontographica Americana, 2(1) 1941: pp. 470-522