| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Listroa
Taxonomy
Listroa was named by Palmer (1962) [Sepkoski's age data: Cm Dres-u Sepkoski's reference number: 1017]. It is not extant. Its type is Listroa toxoura.
It was assigned to Aphelaspididae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
It was assigned to Aphelaspididae by Jell and Adrain (2002); and to Asaphida by Sepkoski (2002).
Species
L. toxoura (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1962 | Listroa Palmer pp. F-40 |
| 2002 | Listroa Jell and Adrain p. 399 |
| 2002 | Listroa 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, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Age range: Steptoean or 497.00000 to 493.50000 Ma
Collections (8 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Steptoean | USA (Nevada) | L. toxoura (75737 75738 110440 110441 111322 111323) | |
| Dresbachian | USA (Nevada) | L. toxoura (75428) | |
| Dresbachian | Canada (Yukon) | L. toxoura (55223) |