| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Exigua
Taxonomy
Exigua was named by Howell (1937). It is not extant.
It was assigned to Plethopeltidae by Jell and Adrain (2002).
It was assigned to Plethopeltidae by Jell and Adrain (2002).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1937 | Exigua Howell |
| 1940 | Brassicicephalus Lochmann |
| 2002 | Exigua Jell and Adrain p. 375 |
| 2002 | Brassicicephalus 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: g = genus, c = class | |||||
| References: Whittington et al. 1997, Aberhan et al. 2004 | |||||
Collections (6 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Menevian | Greenland (Peary Land) | E. quebecensis (49484) | |
| Marjumian | Greenland (Peary Land) | E. quebecensis (49433 49435 49453) | |
| Marjumian | USA (Vermont) | E. quadrata (222) | |
| Furongian | USA (Utah) | Brassicicephalus sp. (156427) |