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Olcostephanus drumensis
Taxonomy
No taxonomic data are available
Sister species
Astieria bangei, Astieria neohispanica, Astieria raricostata, Astieria zacatecana, Maderia casitensis, Maderia coahuilensis, Maderia marcosensis, O. astierianus, O. atherstoni (syn. O. quadriradiatus, Ammonites schenki, Rogersites douvillei, Rogersites bakeri, Astieria actinota, O. coahuilensis, Astieria sudandina, Astieria astieriformis, Holcostephanus auritus, Rogersites tenuicostatus, Astieria curacoensis, Astieria symonensis, Holcostephanus (Astieria) guebhardi, Rogersites prorsiradiatus, Rogersites sphaeroidalis, Holcostephanus modderensis, Holcostephanus midas, Astieria imbricata, Rogersites filifer, Astieria leptoplana, Taraisites neoleonense, Astieria catulloi, Rogersites curvicostata, Holcostephanus rogersi, Rogersites otoitoides, Holcostephanus wilmanae, Ammonites bainii), O. delicatecostatus, O. detonii, O. paucicostatus, O. pecki, O. popenoei, O. sanlazarensis, Subastieria balkanica, Subastieria inordinata, Subastieria sulcosae, Subastieria sulcosus, Taraisites bosei
Sister species lacking formal opinion data
Synonymy list
No taxonomic opinions are available
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Diagnosis
No diagnoses are available