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Stearoceras sanandreasense
Taxonomy
Titanoceras sanandreasense was named by Miller et al. (1933). It is not a trace fossil. Its type locality is Penasco Valley, Highway 82, which is in a Kungurian shallow subtidal limestone in the San Andres Formation of New Mexico.
It was recombined as Parapenascoceras sanandreasense by Ruzhentsev and Shimanskiy (1954); it was recombined as Stearoceras sanandreasense by Miller and Youngquist (1949), Sealey and Lucas (2025).
It was recombined as Parapenascoceras sanandreasense by Ruzhentsev and Shimanskiy (1954); it was recombined as Stearoceras sanandreasense by Miller and Youngquist (1949), Sealey and Lucas (2025).
Synonymy list
| Year | Name and author |
|---|---|
| 1933 | Titanoceras sanandreasense Miller et al. p. 204 figs. Pl 13, fig 7; pl 17, figs 1,2 |
| 1942 | Titanoceras sanandreasense Clifton p. 696 |
| 1942 | Titanoceras sanandreasense Miller and Unklesbay p. 733 fig. 1D,3B,4 |
| 1949 | Stearoceras sanandreasense Miller and Youngquist |
| 1954 | Parapenascoceras sanandreasense Ruzhentsev and Shimanskiy p. 93 |
| 2025 | Stearoceras sanandreasense Sealey and Lucas p. 255 figs. 10C,D, 11A,B, 13A-C, 14A-D, 15D,E |
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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.
†Stearoceras sanandreasense Miller et al. 1933
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 5 | 44.0 | 24.4 | 65.2 | 45.5 | 15.7 | |
| shell diameter | 5 | 118.1 | 44.4 | 191.3 | 133.5 | 56.8 | |
| shell inflation | 5 | 65.4 | 46.1 | 90.1 | 67.5 | 20.7 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kungurian | USA (New Mexico) | Stearoceras sanandreasense (276616 276617 276618 276619) Titanoceras sanandreasense (type locality: 113092) | |
| Kungurian | USA (Texas) | Titanoceras sanandreasense (90740 90745 90747 90749 90750) | |
| Roadian | USA (Arizona) | Titanoceras sanandreasense (105411 113091 113093) |