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Nautilus cookana
Taxonomy
Nautilus cookana was named by Whitfield (1892) [DISTRIBUTION: Eocene; Atlantic Coastal Plain.]. It is not a trace fossil.
It was recombined as Eutrephoceras cookana by Reeside (1924) and Spath (1927); it was recombined as Eutrephoceras cookanum by Miller and Thompson (1933), Stenzel (1940), Stenzel (1942) and Miller (1947); it was recombined as Kummeloceras cookanum by Matsumoto (1983); it was recombined as Kummelonautilus cookana by Matsumoto (1984); it was corrected as Nautilus cookanum by Squires (1988); it was recombined as Kummelonautilus cookanus by Squires (2001).
It was recombined as Eutrephoceras cookana by Reeside (1924) and Spath (1927); it was recombined as Eutrephoceras cookanum by Miller and Thompson (1933), Stenzel (1940), Stenzel (1942) and Miller (1947); it was recombined as Kummeloceras cookanum by Matsumoto (1983); it was recombined as Kummelonautilus cookana by Matsumoto (1984); it was corrected as Nautilus cookanum by Squires (1988); it was recombined as Kummelonautilus cookanus by Squires (2001).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1892 | Nautilus cookana Whitfield pp. 285-286 figs. pl. 48, fig. 1 |
| 1924 | Eutrephoceras cookana Reeside p. 4 |
| 1927 | Eutrephoceras cookana Spath p. 426 |
| 1933 | Eutrephoceras cookanum Miller and Thompson p. 302 |
| 1940 | Eutrephoceras cookanum Stenzel p. 733 |
| 1942 | Eutrephoceras cookanum Stenzel figs. Cards 3a, 3b |
| 1947 | Eutrephoceras cookanum Miller p. 30 |
| 1983 | Kummeloceras cookanum Matsumoto p. 12 |
| 1984 | Kummelonautilus cookana Matsumoto p. 345 |
| 1988 | Nautilus cookanum Squires p. 76 figs. 2.1, 3.1-3.4 |
| 2001 | Kummelonautilus cookanus Squires p. 20 |
| 2022 | Nautilus cookana Goedert et al. p. 6 |
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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.
†Nautilus cookana Whitfield 1892
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Diagnosis
No diagnoses are available