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Utagnostus
Taxonomy
Utagnostus was named by Robinson (1964) [Sepkoski's age data: Cm uMid-m Cm uMid-u]. It is not extant. Its type is Utagnostus trispinulus.
It was assigned to Clavagnostidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
It was assigned to Clavagnostidae by Whittington et al. (1997); and to Agnostida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1964 | Utagnostus Robinson |
| 1997 | Utagnostus Whittington et al. p. 373 |
| 2002 | Utagnostus 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. †Utagnostus Robinson 1964
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†Utagnostus neglectus Jago 1976
†Utagnostus songae Peng and Robison 2000
†Utagnostus trispinulus Robison 1964
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Kiessling 2004, Whittington et al. 1997 | |||||
Age range: base of the Zhanaarykian to the top of the Dresbachian or 503.00000 to 485.40000 Ma
Collections (14 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Middle Cambrian | India | U. neglectus (114665) | |
| Drumian | USA (Utah) | U. songae (230679) | |
| Menevian | USA (Utah) | U. trispinulus (10572) | |
| Wangcunian | China (Hunan) | U. songae (49161) U. trispinulus (49283) | |
| Zhanaarykian | Kazakhstan | U. trispinulus (9958 9962 118097 118099) | |
| Guzhangian | Antarctica | U. sp. (227789) | |
| Guzhangian | China (Hunan) | U. neglectus (128346 128347 128351) | |
| Dresbachian | Canada (Newfoundland and Labrador) | U. trispinulus (9701) |