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Sieberella pyriforma
Taxonomy
Sieberella pyriforma was named by Johnson (1970). Its type specimen is USNM 156850 and is a 3D body fossil. Its type locality is USNM 10707. In second saddle on crest of Sulphur Spring Range, SE. of Hill 7881, which is in a Deer Parkian carbonate limestone in the McColley Canyon Formation of Nevada.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1970 | Sieberella pyriforma Johnson pp. 94 - 95 figs. Pl. 12, figs. 1-19 |
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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.
†Sieberella pyriforma Johnson 1970
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Diagnosis
Reference | Diagnosis | |
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J. G. Johnson 1970 | S. pyriforma. is characterized by its relatively strongly convex brachial valve, its small, narrow, ventral umbo, its pyriform outline, and its irregular, subangular, bifurcating plications. |