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Gyrodes (Sohlella) canadensis
Taxonomy
Gyrodes canadensis was named by Whiteaves (1903) [m. kosnik taxon no: 9654]. Its type specimen is CGS 5777 and is a 3D body fossil. It is the type species of Gyrodes (Sohlella).
It was recombined as Gyrodes (Sohlella) canadensis by Popenoe et al. (1987) and Dockery (1993).
It was recombined as Gyrodes (Sohlella) canadensis by Popenoe et al. (1987) and Dockery (1993).
Sister species lacking formal opinion data
Synonyms
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Synonymy list
Year | Name and author |
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1879 | Gyrodes excavatus Whiteaves figs. pl. 16, figs. 2 and 2a |
1903 | Gyrodes canadensis Whiteaves p. 365 |
1917 | Gyrodes canadensis Waring p. 66 figs. Pl. 9, Fig. 7 |
1987 | Gyrodes (Sohlella) canadensis Popenoe et al. pp. 85 - 87 figs. 5.31-5.33, 6.5, 6.6, 6.11-6.13, 6.15, 6.16, 6.20, 6.21' 6.25, 6.26, 6.30, 6.31 |
1993 | Gyrodes (Sohlella) canadensis Dockery pp. 75 - 76 figs. Plate 20, figures 11-12 |
1993 | Gyrodes canadensis Elder and Saul figs. Pl 1, figs 14,15 |
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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.
†Gyrodes (Sohlella) canadensis Whiteaves 1903
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Invalid names: Gyrodes excavatus Whiteaves 1879 [synonym]
Diagnosis
Reference | Diagnosis | |
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W. P. Popenoe et al. 1987 | Shell thin, small to medium sized, spire about 22% of total height; suture appressed, at posterior one-third of penultimate whorl; shoulder sharply tabulate with concave band adapically and broad slightly concave zone abapically; whorl profile roundly inflated abapical to the concave zone; umbilical margin roundly biangulate; umbilicus comma-form, sides sloping; growth line obliquely prosocline with antispiral flexure at the umbilical angulation; aperture oblique, tear-drop shaped; outer lip thin, projected posteriorly; inner lip thin, wrapped onto the last whorl at the outer umbilical angulation. |