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Opalia mathewsonii
Taxonomy
Scalaria (Opalia) mathewsonii was named by Gabb (1864). It is extant. Its type specimen is ANSP 4220..
It was recombined as Epitonium (Confusiscala) mathewsonii by Stewart (1927); it was recombined as Opalia (Confusiscala) mathewsonii by Durham (1937); it was recombined as Opalia mathewsonii by Squires and Saul (2003).
It was recombined as Epitonium (Confusiscala) mathewsonii by Stewart (1927); it was recombined as Opalia (Confusiscala) mathewsonii by Durham (1937); it was recombined as Opalia mathewsonii by Squires and Saul (2003).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1864 | Scalaria (Opalia) mathewsonii Gabb p. 212 figs. pl. 32, fig. 278 |
| 1927 | Epitonium (Confusiscala) mathewsonii Stewart p. 321 figs. Plate XXIV, fig. 20. |
| 1937 | Opalia (Confusiscala) mathewsonii Durham p. 504 |
| 2003 | Opalia mathewsonii Squires and Saul p. 27 figs. Figures 9-11 |
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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.
Opalia mathewsonii Gabb 1864
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Beu et al. 1990, Kiessling 2004 | |||||
Age range: Middle Campanian or 83.50000 to 70.60000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Campanian | USA (California) | Opalia mathewsonii (185174) |