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Ringsteadia pseudoyo
Taxonomy
Ringsteadia pseudoyo was named by Salfeld (1917). Its type specimen is NHM 24089 and is a 3D body fossil. Its type locality is Wootton Bassett (Marston Ironstone, BMNH), which is in an Oxfordian carbonate limestone in the Ampthill Clay Formation of the United Kingdom.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1917 | Ringsteadia pseudoyo Salfeld p. 74 figs. Pl 8, figs 1,2 |
| 2010 | Ringsteadia pseudoyo Wright p. 26 figs. Pl 1, figs 1,3; pl 5, figs 2,3; pl 7, fig 4; text-figs 5A,B,E, 7B,I |
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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.
†Ringsteadia pseudoyo Salfeld 1917
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| shell height | 9 | 56.8 | 41.9 | 82.3 | 54.7 | 14.6 | |
| shell diameter | 9 | 120.3 | 91.0 | 175.0 | 114.0 | 30.4 | |
| shell inflation | 9 | 23.1 | 15.4 | 38.5 | 22.1 | 8.16 |
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| Source: o = order, c = class | |||||
| References: Kiessling 2003, Kiessling 2004 | |||||
Age range: Late/Upper Oxfordian or 157.90000 to 154.80000 Ma
Collections (9 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Oxfordian | United Kingdom (Wiltshire) | Ringsteadia pseudoyo (type locality: 163926 163927 163929 163930 163931 163933 163934) | |
| Late/Upper Oxfordian | United Kingdom (Dorset) | Ringsteadia pseudoyo (163928 163947) |