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Popenoella
Taxonomy
Popenoella was named by Cooper and Leanza (2017).
It was assigned to Yaadiinae by Cooper and Leanza (2017).
It was assigned to Yaadiinae by Cooper and Leanza (2017).
Species
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1955 | Packardella Kobayashi and Amano |
| 2017 | Popenoella Cooper and Leanza p. 328 figs. Fig. 6N, O |
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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. †Popenoella Cooper and Leanza 2017
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†Popenoella hemphilli Anderson 1958
Invalid names: Packardella Kobayashi and Amano 1955 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| M. R. Cooper and H. A. Leanza 2017 | Like Yaadia but with rounded antero-lateral margin, umbones positioned further back, anterior face not flattened, rounded anterolateral shoulders without enlarged tubercles; narrow shallowly-sunken escutcheon smooth (primitive), or with strong subtransverse costellae continuous from area (derived); very large ligament nymph; juvenile ribbing of area may form complicated chevrons; nodate marginal carinae evanescing in later growth. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Aberhan et al. 2004 | |||||
Age range: base of the Middle Turonian to the top of the Early/Lower Maastrichtian or 93.90000 to 66.00000 Ma
Collections (26 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Cretaceous | USA (California) | Trigonia hemphilli (215428) | |
| Middle Turonian | USA (California) | Trigonia hemphilli (224971) | |
| Early/Lower Campanian | USA (California) | Trigonia hemphilli (44277) | |
| Late/Upper Campanian | USA (California) | Trigonia hemphilli (1510 1520 1523 1526 1528 1530 1532 1534 1535 1536 1537 1538 1539 1540 1543 1546 1549 1550 1551) | |
| Middle Campanian | USA (California) | Yaadia hemphilli (144763) | |
| Late/Upper Campanian - Early/Lower Maastrichtian | USA (California) | Trigonia hemphilli (1533) | |
| Early/Lower Maastrichtian | USA (California) | Yaadia hemphilli (239773) | |
| Maastrichtian | USA (California) | Yaadia hemphilli (1354) |