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Tatonaspis
Taxonomy
Tatonaspis was named by Kobayashi (1935) [Sepkoski's age data: Cm Fran-u Cm Trep-l]. It is not extant.
It was assigned to Illaenuridae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
It was assigned to Illaenuridae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1935 | Tatonaspis Kobayashi |
| 2002 | Tatonaspis Jell and Adrain p. 451 |
| 2002 | Tatonaspis 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.
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004, Hendy et al. 2009 | |||||
Age range: base of the Paibian to the top of the Tremadocian or 497.00000 to 477.70000 Ma
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Paibian | USA (Alaska) | T. alaskensis (233750 233751) | |
| Merioneth | USA (Vermont) | T. breviceps (8976) | |
| Trempealeauan | Canada (Newfoundland and Labrador) | T. sp. (203836) | |
| Trempealeauan | Canada (Yukon) | T. diorbita (55285 55305 55307 55308 55310 55311 55312) | |
| Trempealeauan | Canada (Quebec) | T. levisensis (224138) | |
| Tremadocian | Canada (Yukon) | T. kindlei (55315) |