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Arenorthis
Taxonomy
Arenorthis was named by Havlícek (1970) [Sepkoski's age data: O Ashg-u]. Its type is Arenorthis arenaria.
It was assigned to Heterorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
It was assigned to Heterorthidae by Williams et al. (2000); and to Orthida by Sepkoski (2002).
Species
A. arenaria (type species), A. paranaensis
Synonymy list
| Year | Name and author |
|---|---|
| 1970 | Arenorthis Havlícek |
| 2000 | Arenorthis Williams et al. p. 804 |
| 2002 | Arenorthis 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.
G. †Arenorthis Havlícek 1970
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†Arenorthis arenaria Havlícek 1970
†Arenorthis paranaensis Benedetto et al. 2013
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Hendy 2009, Nesnidal et al. 2013 | |||||
Age range: Hirnantian or 445.20000 to 443.10000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Hirnantian | Morocco (Errachidia) | A. arenaria (152620) | |
| Hirnantian (glacial) | Morocco (Zagora) | A. arenaria (152623 152624) | |
| Hirnantian | Paraguay | A. paranaensis (152546 152547) Clarkeia antisiensis (25085 152549) | |
| Hirnantian | Argentina (San Juan) | A. sp. (8773) |