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Denayella bella
Taxonomy
Trepospira (Angyomphalus) bella was named by Tyler (1965). Its type specimen is YPM 16479, a shell, and it is a 3D body fossil. Its type locality is river bed immediately downstream from the Four Mile Dam on Thunder Bay River, which is in a Givetian carbonate limestone in the Four Mile Dam Formation of Michigan.
It was recombined as Denayella bella by Wagner (2023).
It was recombined as Denayella bella by Wagner (2023).
Synonymy list
| Year | Name and author |
|---|---|
| 1965 | Trepospira (Angyomphalus) bella Tyler p. 342 figs. pl. 47 f. 22-24 |
| 1971 | Trepospira (Angyomphalus) bella Rollins et al. p. 157 |
| 2023 | Denayella bella Wagner p. S1261 |
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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.
†Denayella bella Tyler 1965
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. H. Tyler 1965 | Shell small, holotype 3.6 mm. high and 6.25 mm. wide, lenticular, with de-pressed, gently convex upper surface; sutures shallow; base hemiomphalus; characteristic funicle absent; growth lines indiscernible; selenizone narrow, concave, with weak border threads and without lunulae, with lower edge on periphery; sinus and slit unknown; ornament consisting of clearly defined subsutural nodes elongate radially, slightly variable in spacing, and slightly opisthocline; circumumbilical nodes elongate radially, fewer, longer, and less strongly pronounced than subsutural nodes; other ornamentation absent from upper whorl surface.
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Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Bambach et al. 2007 | |||||