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Alacephalus
Taxonomy
Alacephalus was named by Repina (1960). It is not extant.
It was assigned to Trilobita by Repina et al. (1999); and to Edelsteinaspididae by Jell and Adrain (2002).
It was assigned to Trilobita by Repina et al. (1999); and to Edelsteinaspididae by Jell and Adrain (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Alacephalus Repina |
| 1999 | Alacephalus Repina et al. p. 7 |
| 2002 | Alacephalus Jell and Adrain p. 339 |
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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. †Alacephalus Repina 1960
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Hendy et al. 2009, Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: base of the Atdabanian to the top of the Botomian or 521.00000 to 512.10000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Atdabanian | Russian Federation (Kemorovo) | A. sp. (57019) | |
| Atdabanian | Russian Federation (Khakasiya) | A. contortus (81328) | |
| Botomian | Russian Federation (Kemorovo) | A. sp. (57021) |