| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Heleninae
Taxonomy
Heleninae was named by Hull (1997). Its type is Helena.
It was assigned to Parvivaccidae by De Wever et al. (2001).
It was assigned to Parvivaccidae by De Wever et al. (2001).
Subtaxa
Helena (type genus), Tappanella
Synonymy list
| Year | Name and author |
|---|---|
| 1997 | Heleninae Hull |
| 2001 | Heleninae De Wever et al. p. 114 |
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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: p = phylum | |||||
| Reference: Kiessling 1999 | |||||
Age range: base of the Early/Lower Bathonian to the top of the Early/Lower Berriasian or 168.20000 to 141.00000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Bathonian | USA (Oregon) | Heleninae indet. (94149) | |
| Callovian | USA (California) | Helena exquisita, Tappanenella novacubica, Tappanella novacubica (50737) | |
| Late/Upper Kimmeridgian | Antarctica | Tappanella novacubica (46961) | |
| Late/Upper Tithonian - Early/Lower Berriasian | Russian Federation | Helena sp. (51289) |