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Tholifrons
Taxonomy
Tholifrons was named by Palmer (1968) [Sepkoski's age data: Cm Dres-u]. It is not extant.
It was assigned to Trilobita by Sepkoski (2002); and to Diceratocephalidae by Jell and Adrain (2002).
It was assigned to Trilobita by Sepkoski (2002); and to Diceratocephalidae by Jell and Adrain (2002).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1968 | Tholifrons Palmer |
| 1968 | Paraphoreotropis Shaw |
| 2002 | Tholifrons Jell and Adrain p. 453 |
| 2002 | Tholifrons 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. †Tholifrons Palmer 1968
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†Tholifrons minuta Palmer 1968
Invalid names: Paraphoreotropis Shaw 1968 [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 (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Steptoean | USA (Vermont) | Paraphoreotropis vermontensis (8977) | |
| Dresbachian | USA (Alaska) | T. adevna, T. minutus (64800) T. advena (225279 225280) | |
| Dresbachian | Canada (Yukon) | T. advena (55224 55231) T. minuta (55277) |