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Tretaspis sagenosus
Taxonomy
Tretaspis sagenosus was named by Whittington (1959) [Paratypes: USNM 137691a-c]. Its type specimen is USNM 137690, a cephalon/head (cranidium), and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 1959 | Tretaspis sagenosus Whittington p. 448 figs. Pl. 24, figs. 1-5 |
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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.
†Tretaspis sagenosus Whittington 1959
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, f = family, c = class | |||||
| References: Hendy 2009, Aberhan et al. 2004 | |||||
Age range: Turinian or 457.30000 to 453.80000 Ma
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Turinian | USA (Virginia) | Tretaspis sagenosus (73342) | |
| Ashbyan | USA (Virginia) | Tretaspis sagenosus (73341) | |
| Blackriveran | USA (Virginia) | Tretaspis sagenosus (73343 102231 105254 105255) |