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Cyclothyris larwoodi
Taxonomy
Lamellaerhynchia larwoodi was named by Owen (1959). Its type specimen is NHM, London no. BB. 39277 and is a 3D body fossil.
It was recombined as Cyclothyris larwoodi by Smirnova (2012).
It was recombined as Cyclothyris larwoodi by Smirnova (2012).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1959 | Lamellaerhynchia larwoodi Owen pp. 253-254 figs. Pl. 5, Fig. 1a-1c |
| 2012 | Cyclothyris larwoodi Smirnova p. 1230 figs. Pl. 3, Fig. 5; Fig. 20 |
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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.
†Cyclothyris larwoodi Owen 1959
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Diagnosis
No diagnoses are available
Measurements
| part | N | mean | minimum | maximum | median | s.d. | |
|---|---|---|---|---|---|---|---|
| height | 4 | 11.3 | 10.0 | 13.3 | 11.0 | 1.40 | |
| shell height | 1 | 13.0 | - | - | - | - |
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| Source: o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: base of the Early/Lower Aptian to the top of the Late/Upper Aptian or 121.40000 to 113.20000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Aptian | Kazakhstan | Cyclothyris larwoodi (64638) | |
| Late/Upper Aptian | Russian Federation | Cyclothyris larwoodi (155768 155769) |