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Drilluta sicca
Taxonomy
Drilluta sicca was named by Saul and Popenoe (1993). Its type specimen is CASG 445.31 and is a 3D body fossil. Its type locality is CAS Loc. 445 - Phoenix, which is in a Turonian coastal siliciclastic in Oregon.
Sister species lacking formal opinion data
Synonymy list
Year | Name and author |
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1993 | Drilluta sicca Saul and Popenoe p. 370 figs. Figures 73-82 |
2005 | Drilluta sicca Haggart et al. fig. 6.9 |
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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.
†Drilluta sicca Saul and Popenoe 1993
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Diagnosis
Reference | Diagnosis | |
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L. R. Saul and W. P. Popenoe 1993 | A volutiform Drilluta with moderately devel- oped, wrinkled collar, slightly concave ramp, and 10-12 strongly shouldered, nearly straight collabral ribs per whorl. On spire, shoulder at about two-thirds whorl height. |