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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Gregariella amara
Taxonomy
Gregariella amara was named by Griffin et al. (2008). Its type specimen is GHUNLPam 592, a shell, and it is a 3D body fossil.
Sister species lacking formal opinion data
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Gregariella amara Griffin et al. p. 144 |
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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.
†Gregariella amara Griffin et al. 2008
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. Griffin et al. 2008 | Gregariella with well defined postum-bonal ridge; anterior area with 7-10 ribs and posterior area with about 65 to 80, less crowded below pos-tumbonal ridge (18-20) than on dorsal area; rib section gently convex. |
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class | |||||
| References: Hendy et al. 2009, Aberhan et al. 2004 | |||||
Age range: base of the Maastrichtian to the top of the Danian or 72.10000 to 61.60000 Ma
Collections (10 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Maastrichtian | Argentina (La Pampa) | Gregariella amara (106089 106091) | |
| Maastrichtian | Argentina (Mendoza) | Gregariella amara (106082 106083) | |
| Maastrichtian | Argentina (Rio Negro) | Gregariella amara (106099 106100) | |
| Danian | Argentina (Mendoza) | Gregariella amara (106084) | |
| Danian | Argentina (La Pampa) | Gregariella amara (106092 106095) | |
| Danian | Argentina (Rio Negro) | Gregariella amara (106098) |