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Anechocephalus
Taxonomy
Anechocephalus was named by Palmer (1960) [Sepkoski's age data: Cm Fran-l Sepkoski's reference number: 1017]. It is not extant. Its type is Anechocephalus trigranulatus.
It was assigned to Pterocephaliidae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
It was assigned to Pterocephaliidae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
Species
A. spinosus, A. trigranulatus (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1960 | Anechocephalus Palmer p. 92 |
| 2002 | Anechocephalus Jell and Adrain p. 341 |
| 2002 | Anechocephalus 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. †Anechocephalus Palmer 1960
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†Anechocephalus spinosus Palmer 1965
†Anechocephalus trigranulatus Palmer 1960
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: Steptoean or 497.00000 to 493.50000 Ma
Collections (11 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Steptoean | USA (Nevada) | A. spinosus (111328 111329 113394 113395 113396 113398 113399 113400) A. trigranulatus (110627) | |
| Steptoean | USA (Arkansas) | A. aphelodermus (225281) | |
| Dresbachian | Canada (Yukon) | A. sp., A. spinosus (55225) |