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Tannuaspis
Taxonomy
Tannuaspis was named by Obruchev (1956) [Sepkoski's age data: D Gedi Sepkoski's reference number: 1066]. It is not extant.
It was assigned to Cephalaspidiformes by Sepkoski (2002); and to Tremataspididae by Sansom (2009).
It was assigned to Cephalaspidiformes by Sepkoski (2002); and to Tremataspididae by Sansom (2009).
Species
Synonymy list
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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: subp = subphylum, p = phylum | |||||
| References: Carroll 1988, Kiessling 2004 | |||||
Age range: base of the Pridoli to the top of the Helderbergian or 422.70000 to 393.47000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Pridoli - Helderbergian | Russian Federation | T. levenkoi (24785) |