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Calcifolium
Taxonomy
Calcifolium was named by Shvetsov and Birina (1935). It is not extant. Its type is Calcifolium okense.
It was assigned to Calcifoliaceae by Vachard and Cozar (2005).
It was assigned to Calcifoliaceae by Vachard and Cozar (2005).
Species
C. okense (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Calcifolium Shvetsov and Birina |
| 2005 | Calcifolium Vachard and Cozar |
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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.
G. †Calcifolium Shvetsov and Birina 1935
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†Calcifolium okense Shvetsov and Birina 1935
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| D. Vachard and P. Cozar 2005 | Petals or cups of yellowish calcite, often dark, composed of tiny fibres. Apical extremity acute, and generally in the plane of symmetry. Anastomosed petals of calcite, with their bases slightly widened (“embase”). Petals sometimes conical or parallel growth (confused with sections of a wide siphon). The filaments are dichotomous, and are arranged in a single layer near one face of the petal. In transverse section most of these filaments are round, but some are quadrate. In longitudinal section, they exhibit a series of dichotomous ramifications, and that have the form of a tuning-fork or an ortonellacean structure. They are generally white, and clearly visible in the darker petal. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Vachard and Cozar 2005 | |||||
Age range: Serpukhovian or 330.30000 to 323.40000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Asbian - Serpukhovian | Russian Federation | C. okense (13278) | |
| Serpukhovian | France | C. okense (76632) |