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Taxonomy
Irusella was named by Hertlein and Grant (1972) [Sepkoski's age data: T Mi-m R Sepkoski's reference number: 1112]. It is extant.
It was assigned to Venerinae by Coan et al. (2000); and to Veneroida by Sepkoski (2002).
It was assigned to Venerinae by Coan et al. (2000); and to Veneroida by Sepkoski (2002).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1972 | Irusella Hertlein and Grant |
| 2000 | Irusella Coan et al. p. 372 |
| 2002 | Irusella 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. Irusella Hertlein and Grant 1972
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Irusella lamellifera Conrad 1837 [lamellar venus]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Kiessling 2004, Aberhan et al. 2004 | |||||
Age range
Maximum range based only on fossils: base of the Piacenzian to the top of the Late/Upper Pleistocene or 3.60000 to 0.01170 Ma
Minimum age of oldest fossil (stem group age): 2.58 Ma
Minimum age of oldest fossil (stem group age): 2.58 Ma
Collections (16 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Piacenzian | USA (California) | Petricola lamellifera (186031) | |
| Gelasian | USA (California) | Irus lamellifer (189768) | |
| Pleistocene | Mexico (Baja California) | Irus lamellifer (96593) | |
| Quaternary | USA (California) | Irus lamellifer (37933 37937 37938 37939 37947 37948) | |
| Late/Upper Pleistocene | Mexico (Baja California) | Irus lamellifer (96591) | |
| Late/Upper Pleistocene | USA (California) | Irus lamellifer (240580 240594 240600 240603 240650) | |
| Late/Upper Pleistocene | Mexico | Irus lamellifer (52347) |