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Ariadnaria obstricta
Taxonomy
Stomatia obstricta was named by White (1889). Its type specimen is USNM 20124 and is a 3D body fossil.
It was recombined as Ariadnaria obstricta by Saul and Squires (2008).
It was recombined as Ariadnaria obstricta by Saul and Squires (2008).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1889 | Stomatia obstricta White pp. 18-19 figs. pl. 4, figs. 10-11 |
| 2008 | Ariadnaria obstricta Saul and Squires p. 122 figs. Figures 9-10 |
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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.
†Ariadnaria obstricta White 1889
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| L. R. Saul and R. L. Squires 2008 | Medium size Ariadnaria with high spire and angulate last whorl, sculpture of a few widely spaced strong cords, umbilicus chink-like or covered. |
Measurements
No measurements are available
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| Source: superf = superfamily, c = class | |||||
| References: Hendy et al. 2009, Kiessling 2004 | |||||
Age range: Late/Upper Santonian or 85.70000 to 83.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Santonian | USA (California) | Ariadnaria obstricta (240020) |