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Laratheca
Taxonomy
Laratheca was named by Rozanov et al. (1969) [Missarzhevsky in Rozanov et al. 1969; Sepkoski's age data: Cm Tomm-l Cm Tomm-u Sepkoski's reference number: 268,522]. Its type is Laratheca nana.
It was assigned to Circothecidae by Rozanov et al. (1969); and to Circothecida by Sepkoski (2002).
It was assigned to Circothecidae by Rozanov et al. (1969); and to Circothecida by Sepkoski (2002).
Species
L. nana (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1969 | Laratheca Rozanov et al. pp. 132-133 |
| 2002 | Laratheca Sepkoski |
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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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: p = phylum | |||||
| Reference: Hendy et al. 2009 | |||||
Age range: Tommotian or 525.50000 to 521.00000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Meishucunian | China (Shaanxi) | L. sp. (107775) | |
| Tommotian | Russian Federation (Sakha) | L. nana (10046) | |
| Tommotian | Russian Federation (Yakutia) | L. nana (45847 45849) |