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Levisaspis
Taxonomy
Levisaspis was named by Rasetti (1943) [Sepkoski's age data: O Trem-l]. It is not extant.
It was assigned to Norwoodiidae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
It was assigned to Norwoodiidae by Jell and Adrain (2002); and to Ptychopariida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1943 | Levisaspis Rasetti |
| 2002 | Levisaspis Jell and Adrain p. 397 |
| 2002 | Levisaspis 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. †Levisaspis Rasetti 1943
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Aberhan et al. 2004, Whittington et al. 1997 | |||||
Age range: base of the Tremadoc to the top of the Tremadocian or 486.50000 to 477.70000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Furongian | Argentina | L. sp. (115455 115457) | |
| Tremadoc | Canada (Newfoundland and Labrador) | L. sp. (78091) | |
| Tremadocian | Canada (Newfoundland and Labrador) | L. convexus (81290) |