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Taxonomy
Illionia was named by Billings (1874) [Sepkoski's age data: S Ludl-l D Give-l]. Its type is Illionia canadensis.
It was assigned to Milthinae by Cox et al. (1969); to Lucinidae by Liljedahl (1992); and to Veneroida by Sepkoski (2002).
It was assigned to Milthinae by Cox et al. (1969); to Lucinidae by Liljedahl (1992); and to Veneroida by Sepkoski (2002).
Species
Ilionia prisca, I. canadensis (type species)
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1874 | Illionia Billings |
| 1896 | Prolucina Dall |
| 1969 | Illionia Cox et al. p. 504 |
| 1992 | Ilionia Liljedahl |
| 2002 | Illionia 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. †Illionia Billings 1874
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†Ilionia prisca Hisinger 1837
†Illionia canadensis Whiteaves 1884
Invalid names: Prolucina Dall 1896 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, c = class | |||||
| References: Aberhan et al. 2004, Liljedahl 1992, Kiessling 2004 | |||||
Age range: base of the Llandovery to the top of the Paadla or 443.40000 to 419.20000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Llandovery | USA (Michigan) | I. sp. (532) | |
| Gorstian | Sweden (Gotland) | Ilionia prisca (13603) | |
| Ludfordian | Sweden (Gotland) | Ilionia prisca (13616 13623) | |
| Paadla | Estonia (Saare) | Ilionia prisca (195603) |