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†Siemiradzkia (Prevalia) Stephanov 1972
urn:lsid:organismnames.com:name:2173420
†Siemiradzkia (Prevalia) Stephanov 1972
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Stephanov 1972. Monograph on the Bathonian ammonite genus Siemiradzkia Hyatt, 1900 (Nomenclature, taxonomy and phylogeny). Izvestiya geol Inst sofia (Ser Paleont), 21 1972: 5-83