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Cyclothyris difformis
Taxonomy
Terebratula difformis was named by Valenciennes (1819). Its type specimen is Lamarck coll. MHN Geneva No. 48 and is a 3D body fossil.
It was recombined as Cyclothyris difformis by Owen (1988).
It was recombined as Cyclothyris difformis by Owen (1988).
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1819 | Terebratula difformis Valenciennes p. 255 figs. Pl. 252, Fig. 5 |
| 1988 | Cyclothyris difformis Owen p. 84 figs. Pl. 1, Fig. 13-15; Pl. 2, Fig. 4-6, 10-15 |
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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 difformis Valenciennes 1819
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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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: Early/Lower Cenomanian or 99.60000 to 93.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Cenomanian - Late/Upper Albian | Spain | Cyclothyris difformis (3832) | |
| Early/Lower Cenomanian | France (Poitou-Charentes) | Cyclothyris difformis (73863) |