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Roudairia squiresi
Taxonomy
Roudairia squiresi was named by Kirby and Saul (1995). Its type specimen is LACMIP 12204, a shell, and it is a 3D body fossil. Its type locality is LACMIP loc. 14312, Warm Springs Mountain, which is in a Maastrichtian transition zone/lower shoreface sandstone in the San Francisquito Formation of California.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Roudairia squiresi Kirby and Saul p. 34 figs. Plate 1, figures I- 7; Plate 2, figure 1 |
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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.
†Roudairia squiresi Kirby and Saul 1995
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. X. Kirby and L. R. Saul 1995 | A large Roudairiaof nearly equant proportions, but with the beaks curled well forward, sculptured near the beaks by ten to fourteen undulatory commarginal ribs that evanesce ventrally, with a strong posterior carina along the posterior angulation. Cardinals 3b and 2b relatively narrow and posteriorly directed (Text-fig. 5). |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: Late/Upper Maastrichtian or 70.60000 to 66.00000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Maastrichtian | USA (California) | Roudairia squiresi (type locality: 119451 119454 218668 224524) |