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Litocephalus
Taxonomy
Litocephalus was named by Resser (1937) [Sepkoski's age data: Cm Dres-u Cm Fran-l Sepkoski's reference number: 80]. It is not extant.
It was assigned to Aphelaspididae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
It was assigned to Aphelaspididae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Litocephalus Resser |
| 1938 | Pterocephalina Resser p. 42 |
| 2002 | Litocephalus Jell and Adrain p. 399 |
| 2002 | Litocephalus 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. †Litocephalus Resser 1937
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†Litocephalus granulomarginatus Palmer 1960
†Litocephalus magnus Palmer 1965
†Litocephalus verruculapeza Palmer 1960
Invalid names: Pterocephalina Resser 1938 [synonym]
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 (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Steptoean | USA (Nevada) | L. bilobatus (75270) L. granulomarginatus (75271) L. verruculapeza (110449) | |
| Dresbachian | Canada (Yukon) | L. bilobatus (55232) | |
| Dresbachian | USA (Nevada) | L. granulomarginatus (75437) | |
| Franconian | USA (Nevada) | L. magnus (75436) |